How often can you take Zyrtec (cetirizine). What are the key facts about cetirizine. Who can and cannot take cetirizine. How should cetirizine be administered. What are the potential side effects of cetirizine. Can children take cetirizine. What precautions should be taken when using cetirizine.

Understanding Cetirizine: A Powerful Antihistamine for Allergy Relief

Cetirizine, commonly known by the brand name Zyrtec, is a widely used antihistamine medication that effectively relieves various allergy symptoms. This non-drowsy antihistamine is renowned for its ability to alleviate discomfort associated with hay fever, conjunctivitis, eczema, hives, insect bites, and certain food allergies.

How does cetirizine work to combat allergies? By blocking the action of histamine, a substance produced by the body in response to allergens, cetirizine helps reduce symptoms such as sneezing, itching, and runny nose. Its effectiveness and relatively low risk of drowsiness make it a popular choice for those seeking relief from allergic reactions.

Dosage Guidelines: How Often Can You Take Cetirizine?

The frequency of cetirizine administration depends on various factors, including age and specific medical conditions. For adults and children 12 years and older, the standard dosage is typically 10mg once daily. However, it’s crucial to follow the prescribed instructions or the guidance provided on the product packaging.

Can you take cetirizine more than once a day? In most cases, a single daily dose is sufficient for adults. However, children under 12 may require a different dosing schedule. For instance:

• Children aged 6 to 11: 5mg twice daily, with 10-12 hours between doses
• Children aged 2 to 5: 2.5mg twice daily
• Children aged 1 to 2: Dosage determined by a doctor based on weight or age

Is it safe to exceed the recommended dosage? Taking more than the prescribed amount is generally not advised and unlikely to provide additional benefits. If you feel the current dosage is ineffective, consult your healthcare provider for guidance.

Key Facts About Cetirizine: What You Need to Know

Before using cetirizine, it’s essential to be aware of several key facts:

• Cetirizine is classified as a non-drowsy antihistamine, but some individuals may still experience drowsiness.
• Common side effects include headaches, dry mouth, nausea, dizziness, and diarrhea.
• Some cetirizine capsules contain soya oil, which may be unsuitable for those with peanut or soya allergies.
• Cetirizine is available both by prescription and over-the-counter in various forms, including tablets, capsules, and liquid.

How long does it take for cetirizine to work? Most people experience relief within an hour of taking the medication, with peak effectiveness typically occurring within 2-3 hours.

Who Can and Cannot Take Cetirizine: Important Considerations

While cetirizine is suitable for most adults and children, certain individuals should exercise caution or avoid its use altogether. It’s crucial to consult a healthcare professional before taking cetirizine if you:

• Have a history of allergic reactions to cetirizine or other medications
• Suffer from kidney failure
• Have epilepsy or are at risk of seizures
• Experience difficulty urinating due to an enlarged prostate or other conditions
• Are scheduled for an allergy test (cetirizine may affect the results)

Can pregnant or breastfeeding women take cetirizine? While cetirizine is generally considered safe during pregnancy and breastfeeding, it’s always best to consult with a healthcare provider before use.

Proper Administration of Cetirizine: Tips for Effective Use

To ensure maximum effectiveness and minimize potential side effects, follow these guidelines when taking cetirizine:

1. Take the medication with or without food, but always with a drink of water, milk, or juice.
2. Swallow tablets or capsules whole; do not chew them.
3. For liquid formulations, use the provided measuring device to ensure accurate dosing.
4. Maintain a consistent dosing schedule, taking the medication at approximately the same time each day.

What should you do if you miss a dose? If you forget to take cetirizine, take it as soon as you remember, unless it’s almost time for your next dose. In that case, skip the missed dose and continue with your regular schedule. Never double up on doses to make up for a missed one.

Potential Side Effects and Precautions When Using Cetirizine

While cetirizine is generally well-tolerated, some individuals may experience side effects. Common reactions include:

• Drowsiness or fatigue
• Dry mouth
• Headache
• Nausea or stomach discomfort
• Dizziness

Are there any serious side effects to be aware of? While rare, some individuals may experience more severe reactions such as difficulty breathing, rapid heartbeat, or severe dizziness. If you experience these symptoms, seek medical attention immediately.

Can cetirizine interact with other medications? Cetirizine may interact with certain drugs, including other antihistamines, sedatives, and alcohol. Always inform your healthcare provider about all medications you’re taking to avoid potential interactions.

Cetirizine for Children: Safety and Efficacy Considerations

Cetirizine can be an effective allergy treatment for children, but proper dosing and administration are crucial. Here are some important points to consider:

• Children aged 1 and over can take cetirizine liquid if prescribed by a doctor.
• Over-the-counter cetirizine liquid is suitable for children 2 and older.
• Tablets and liquid forms sold in pharmacies and supermarkets are appropriate for children 6 and older.
• Children 12 and over can use all forms of cetirizine available over-the-counter.

How can you ensure proper dosing for children? Always use the measuring device provided with liquid formulations and follow age-appropriate dosing guidelines. If unsure, consult a pediatrician or pharmacist for guidance.

Long-term Use of Cetirizine: Benefits and Considerations

For individuals with chronic allergies, long-term use of cetirizine may be necessary. While generally safe for extended periods, it’s important to consider the following:

• Regular use may be more effective in preventing allergy symptoms than as-needed treatment.
• Some individuals may develop a tolerance over time, potentially reducing the medication’s effectiveness.
• Long-term use should be monitored by a healthcare provider to assess ongoing benefits and potential risks.

Can cetirizine be used year-round? For those with perennial allergies, year-round use may be appropriate. However, it’s advisable to periodically reassess the need for continued treatment with your healthcare provider.

Alternatives to Cetirizine: Exploring Other Allergy Relief Options

While cetirizine is effective for many people, some may prefer or require alternative treatments. Other options include:

• Other antihistamines such as loratadine (Claritin) or fexofenadine (Allegra)
• Nasal corticosteroids for severe hay fever symptoms
• Natural remedies like saline nasal rinses or local honey (though efficacy varies)
• Immunotherapy for long-term allergy management

How do you choose the right allergy medication? Consider factors such as your specific symptoms, potential side effects, and any other medical conditions you may have. Consulting with an allergist can help determine the most suitable treatment plan for your individual needs.

Cetirizine and Lifestyle: Maximizing Allergy Relief

While cetirizine can effectively manage allergy symptoms, combining medication with lifestyle changes can enhance overall relief. Consider implementing the following strategies:

• Monitor pollen counts and limit outdoor activities on high-pollen days
• Use air purifiers with HEPA filters in your home
• Regularly clean and vacuum to reduce indoor allergens
• Keep windows closed during peak allergy seasons
• Shower and change clothes after spending time outdoors to remove pollen

Can dietary changes help manage allergies? While not a substitute for medication, some individuals find that certain foods may help reduce inflammation and support immune function. Incorporating foods rich in omega-3 fatty acids, quercetin, and vitamin C may offer additional support for allergy sufferers.

Understanding Antihistamine Classifications: Where Does Cetirizine Fit?

Antihistamines are typically classified into two main categories: first-generation and second-generation. Cetirizine belongs to the second-generation group, which offers several advantages:

• Less sedating than first-generation antihistamines
• Longer-lasting effects, often requiring only once-daily dosing
• Fewer anticholinergic side effects (e.g., dry mouth, blurred vision)
• Lower risk of interactions with other medications

How does cetirizine compare to other second-generation antihistamines? While all second-generation antihistamines are generally effective, individual responses may vary. Some people may find better relief with cetirizine, while others may prefer alternatives like loratadine or fexofenadine. It’s often a matter of personal experience and tolerance.

Cetirizine for Specific Allergy Types: Tailoring Treatment

While cetirizine is broadly effective for various allergies, its efficacy may vary depending on the specific type of allergy. Here’s how cetirizine performs for different allergic conditions:

• Hay fever (allergic rhinitis): Highly effective in reducing sneezing, itching, and runny nose
• Hives (urticaria): Can provide significant relief from itching and swelling
• Pet allergies: May help manage symptoms, but avoiding allergen exposure is crucial
• Dust mite allergies: Can alleviate symptoms, particularly when combined with environmental control measures
• Food allergies: May help with mild symptoms, but is not a substitute for avoiding trigger foods

Is cetirizine effective for all types of allergies? While cetirizine is versatile, it may not be the optimal choice for every allergic condition. For example, it may have limited effectiveness for contact dermatitis or certain types of food allergies. Always consult with an allergist to determine the most appropriate treatment for your specific allergy type.

Cetirizine and Travel: Managing Allergies on the Go

For allergy sufferers who enjoy traveling, cetirizine can be a valuable companion. Consider these tips for managing allergies while away from home:

• Pack enough cetirizine for the duration of your trip, plus extra in case of delays
• Keep medication in its original packaging, especially when flying
• Research pollen counts and common allergens at your destination
• Consider starting cetirizine a few days before travel to build up protection
• Bring a copy of your prescription or a doctor’s note, particularly for international travel

Can you take cetirizine on airplanes? Yes, cetirizine is generally allowed in both carry-on and checked luggage. However, it’s always best to keep essential medications in your carry-on bag to ensure access during your flight and in case of lost luggage.

Cetirizine and Exercise: Balancing Allergy Relief and Physical Activity

For active individuals with allergies, balancing medication use with exercise is important. Here are some considerations:

• Take cetirizine at least an hour before outdoor exercise to allow for optimal effectiveness
• Be aware that cetirizine may cause mild drowsiness in some individuals, which could affect performance
• Stay hydrated, as both exercise and antihistamines can contribute to dehydration
• Consider exercising indoors on high-pollen days if outdoor allergies are severe

Does cetirizine affect athletic performance? While cetirizine is less likely to impair performance compared to first-generation antihistamines, individual responses may vary. Some athletes may prefer to use nasal corticosteroids or other localized treatments to manage allergy symptoms without potential systemic effects.

Cetirizine and Skin Conditions: Beyond Respiratory Allergies

While often associated with respiratory allergies, cetirizine can also be beneficial for certain skin conditions. Its use extends to:

• Chronic urticaria (long-term hives)
• Atopic dermatitis (eczema)
• Allergic contact dermatitis
• Insect bite reactions

How does cetirizine help with skin allergies? By blocking histamine receptors, cetirizine can reduce itching, inflammation, and other allergic skin reactions. In some cases, higher doses may be prescribed for severe skin conditions, but this should only be done under medical supervision.

Cetirizine in Combination Therapies: Enhancing Allergy Management

For individuals with severe or complex allergies, cetirizine may be used as part of a combination therapy approach. This might include:

• Combining cetirizine with a nasal corticosteroid for enhanced hay fever relief
• Using cetirizine alongside leukotriene inhibitors for certain types of allergic asthma
• Pairing cetirizine with topical treatments for skin allergies

Is it safe to combine cetirizine with other allergy medications? While many combinations can be safe and effective, it’s crucial to consult with a healthcare provider before combining medications. They can assess potential interactions and ensure the combination is appropriate for your specific situation.

In conclusion, cetirizine offers effective relief for a wide range of allergy symptoms with a generally favorable safety profile. By understanding proper usage, potential side effects, and considerations for specific populations, individuals can maximize the benefits of this versatile antihistamine. As with any medication, it’s important to use cetirizine as directed and consult with a healthcare provider for personalized advice, especially for long-term use or complex allergy management.

Cetirizine: antihistamine that relieves allergy symptoms

1. About cetirizine

Cetirizine is an antihistamine medicine that helps the symptoms of allergies.

It’s used to treat:

• hay fever
• conjunctivitis (red, itchy eye)
• eczema
• hives (urticaria)
• reactions to insect bites and stings
• some food allergies

Cetirizine is known as a non-drowsy antihistamine. It’s much less likely to make you feel sleepy than some other antihistamines.

Cetirizine is available on prescription, but you can also buy it from pharmacies and supermarkets.

It comes as tablets, capsules and as a liquid that you swallow.

2. Key facts

• It’s usual to take cetirizine once a day. Children aged under 12 take it twice a day.
• Cetirizine is classed as a non-drowsy antihistamine, but some people still find it makes them feel quite sleepy.
• Common side effects include headaches, dry mouth, feeling sick, dizziness and diarrhoea.
• Some brands of cetirizine come as capsules. These may contain soya oil. Do not take cetirizine capsules if you are allergic to peanuts or soya.
• Some Benadryl products do not contain cetirizine, but a different antihistamine such as acrivastine.

3. Who can and cannot take cetirizine

Most adults can take cetirizine.

Children

• Children aged 1 and over can take cetirizine liquid if prescribed by their doctor.
• Children aged 2 and over can take cetirizine liquid bought from pharmacies or prescribed by their doctor.
• Children aged 6 and over can take cetirizine tablets and liquid that you buy from pharmacies and supermarkets.
• Children aged 12 and over can take cetirizine capsules, tablets and liquid that you buy from pharmacies and supermarkets.

Who may not be able to take cetirizine

Cetirizine is not suitable for some people. To make sure it’s safe for you, tell your doctor or pharmacist if you:

• have ever had an allergic reaction to cetirizine or any other medicine
• have an allergy to food additives
• have an allergy to peanuts or soya – some brands of cetirizine capsules (but not tablets) contain soya
• have kidney failure
• have epilepsy or another health problem that puts you at risk of having seizures or fits
• have a condition that means you have difficulty peeing
• are due to have an allergy test – taking cetirizine may affect the results, so you might need to stop taking it a few days before the test

4.

How and when to take cetirizine

If you or your child have been prescribed cetirizine, follow your doctor’s instructions about how and when to take it. If it is from a pharmacy or shop, follow the instructions that come with the packet.

Dosage and strength

Cetirizine comes as tablets and capsules (10mg) and as a liquid medicine (labelled either 5mg/5ml or 1mg/1ml).

The usual dose for adults is 10mg once a day.

Doses are usually lower for people with kidney problems.

Children

• For children between 6 to 11 years of age, the usual dose is 5mg, twice a day. Try to leave 10 to 12 hours between doses. So, one first thing in the morning, and one before bedtime.
• For children between 2 to 5 years of age, the dose is 2.5mg, twice a day.
• For children between 1 to 2 years of age, your doctor will use their weight or age to work out the right dose.

How to take it

You can take cetirizine with or without food, but always take the tablets or capsules with a drink of water, milk or squash. Swallow them whole. Do not chew them.

Cetirizine liquid may be easier for children to take than tablets. The liquid medicine will come with a plastic syringe or spoon to give the right dose. If you do not have a syringe or spoon, ask your pharmacist for one. Do not use a kitchen teaspoon as it will not measure out the right amount.

When to take it

You may only need to take cetirizine on a day you have symptoms – for example, if you have been in contact with something that has triggered your allergy, like animal hair.

Or you may need to take it regularly to prevent symptoms – for example, to stop hay fever during spring and summer.

What if I forget to take it?

Take your forgotten dose as soon as you remember, unless it’s nearly time for your next dose. In this case, skip the missed dose and take your next dose at the usual time.

Do not take 2 doses to make up for a forgotten dose.

If you forget to give a dose to a child who is taking cetirizine twice a day, you can give the missed dose if it’s within 4 hours of when they should have had it.

If you remember more than 4 hours after, do not give the missed dose. Instead, wait until the next dose and carry on as normal.

If you often forget doses, it may help to set an alarm to remind you. You could also ask your pharmacist for advice on other ways to help you remember to take your medicine.

What if I take too much?

Cetirizine is generally very safe. Taking more than the usual dose is unlikely to harm you or your child.

If you take an extra dose, you might get some of the common side effects. If this happens or you’re concerned, contact your doctor.

5. Side effects

Like all medicines, cetirizine can cause side effects, although not everyone gets them.

Common side effects

The most common side effect of cetirizine is feeling sleepy and tired. This happens in more than 1 in 10 people. Talk to your doctor or pharmacist if this side effect bothers you or does not go away.

Other common side effects of cetirizine happen in more than 1 in 100 people.

Talk to your doctor or pharmacist if these side effects bother you or do not go away:

• headaches
• dry mouth
• feeling sick (nausea)
• feeling dizzy
• diarrhoea
• sore throat
• sneezing or blocked and runny nose

Children are more likely to get diarrhoea, sneezing or a blocked and runny nose than adults.

Serious side effects

It’s rare to have a serious side effect with cetirizine.

Call your doctor straight away if you have bruising or bleeding that’s more than normal.

Serious allergic reaction

In rare cases, it’s possible to have a serious allergic reaction (anaphylaxis) to cetirizine.

Immediate action required: Call 999 now if:

• your lips, mouth, throat or tongue suddenly become swollen
• you’re breathing very fast or struggling to breathe (you may become very wheezy or feel like you’re choking or gasping for air)
• your throat feels tight or you’re struggling to swallow
• your skin, tongue or lips turn blue, grey or pale (if you have black or brown skin, this may be easier to see on the palms of your hands or soles of your feet)
• you suddenly become very confused, drowsy or dizzy
• someone faints and cannot be woken up
• a child is limp, floppy or not responding like they normally do (their head may fall to the side, backwards or forwards, or they may find it difficult to lift their head or focus on your face)

You or the person who’s unwell may also have a rash that’s swollen, raised, itchy, blistered or peeling.

These can be signs of a serious allergic reaction and may need immediate treatment in hospital.

These are not all the side effects of cetirizine. For a full list, see the leaflet inside your medicines packet.

Information:

You can report any suspected side effect using the Yellow Card safety scheme.

Visit Yellow Card for further information.

6. How to cope with side effects of cetirizine

What to do about:

• feeling sleepy and tired – try a different non-drowsy antihistamine. If this does not help, talk to your doctor.
• headaches – make sure you rest and drink plenty of fluids. It’s best not to drink too much alcohol. Ask your pharmacist to recommend a painkiller for your headaches, but they usually go away after the first week of taking cetirizine. Talk to your doctor if your headaches last longer than a week or are severe.
• dry mouth – chew sugar-free gum or suck sugar-free sweets.
• feeling sick (nausea) – try taking your tablets with food. It may also help if you stick to simple meals and avoid rich or spicy food.
• feeling dizzy – if cetirizine makes you feel dizzy when you stand up, try getting up very slowly or stay sitting down until you feel better. If you begin to feel dizzy, lie down so that you do not faint, then sit until you feel better. Do not drive, cycle or use tools or machines if you feel dizzy or a bit shaky.
• diarrhoea – drink plenty of water or other fluids if you have diarrhoea. Speak to a pharmacist if you have signs of dehydration, such as peeing less than usual or having dark, strong-smelling pee. Do not take any other medicines to treat diarrhoea without speaking to a pharmacist or doctor.
• sore throat – if you’re 16 and over, you can try gargling with an aspirin solution (1 soluble aspirin tablet dissolved in half a glass of water) or use a pain-relieving mouthwash such as Oraldene. If your symptoms last longer than a week, ask your pharmacist or doctor for advice. Children under 16 must not be given aspirin.
• sneezing or blocked and runny nose – try a different non-drowsy antihistamine. If this does not help, talk to your doctor.

7. Pregnancy and breastfeeding

Cetirizine can be used in pregnancy. There is no good evidence that it causes harm to the baby. However, other antihistamines such as loratadine may be recommended as there is more information about its use in pregnancy.

Cetirizine and breastfeeding

If your doctor or health visitor says your baby is healthy, you can take cetirizine while breastfeeding.

There is some information available which shows that only very small amounts get into breast milk. Cetirizine has been used for many years while breastfeeding without side effects in babies.

If your baby is not feeding as well as usual, seems unusually sleepy, or if you have any other concerns about your baby, talk to your doctor, pharmacist, health visitor or midwife.

Non-urgent advice: Tell your doctor if you’re:

• trying to get pregnant
• pregnant
• breastfeeding

Find out more about how cetirizine can affect you and your baby during pregnancy on the Best Use of Medicines in Pregnancy (BUMPS) website.

8. Cautions with other medicines

Some medicines can increase the chances of you having side effects with cetirizine.

Check with your pharmacist or doctor if you’re taking any medicine that makes you drowsy, gives you a dry mouth, or makes it difficult for you to pee. Taking cetirizine might make these side effects worse.

Mixing cetirizine with herbal remedies and supplements

There might be a problem taking some herbal remedies and supplements alongside cetirizine, especially ones that cause sleepiness, a dry mouth, or make it difficult to pee.

Important:
Medicine safety

Tell your doctor or pharmacist if you’re taking any other medicines, including herbal medicines, vitamins or supplements.

9. Common questions about cetirizine

How does cetirizine work?

Cetirizine is a type of medicine called an antihistamine. When you come into contact with something you’re allergic to, such as pollen, animal hair or fur, your body produces a chemical called histamine.

Usually histamine is a useful substance, but in an allergic reaction it causes unpleasant symptoms including itchy, watery eyes, a running or blocked nose, sneezing and skin rashes.

Cetirizine blocks the effects of histamine and reduces these symptoms.

When will I feel better?

You should start to feel better within an hour.

How long should I take cetirizine for?

It depends on why you’re taking cetirizine.

You may only need to take it for a short time or as a one-off dose.

For example, if you have a reaction to an insect bite, you may only need to take cetirizine for a day or two.

You may need to take cetirizine for longer if you’re taking it to prevent symptoms – for example, to stop hay fever when the pollen count is high.

Talk to your doctor or pharmacist if you’re unsure how long you need to take cetirizine for.

Is it safe to take cetirizine for a long time?

Cetirizine is unlikely to do you any harm if you take it for a long time.

However it’s best to take cetirizine only for as long as you need to. If you take it regularly over a long period there’s a very small chance of severe itching if you stop treatment suddenly.

If you’ve been taking cetirizine every day for a long time, talk to your doctor before stopping it.

Can I drink alcohol with it?

It’s best not to drink alcohol while you’re taking cetirizine as it can make you feel sleepy.

Is there any food or drink I need to avoid?

You can eat and drink normally while taking cetirizine.

Can I drive or ride a bike with it?

Cetirizine is classed as a non-drowsy antihistamine, but it’s still possible to feel sleepy after taking it.

If this happens to you, do not drive a car, ride a bike, use tools or machinery until you do not feel tired anymore.

It’s an offence to drive a car if your ability to drive safely is affected. It’s your responsibility to decide if it’s safe to drive. If you’re in any doubt, do not drive.

Talk to your doctor or pharmacist if you’re unsure whether it’s safe for you to drive while taking cetirizine. GOV.UK has more information on the law on drugs and driving.

What’s the difference between cetirizine and other antihistamines?

Cetirizine is known as a non-drowsy antihistamine. That’s because it’s less likely to make you feel sleepy than sedating antihistamines, such as Piriton (chlorphenamine).

Most people prefer to take a non-drowsy antihistamine instead of one that makes them drowsy. An exception is when you want the medicine to make you sleepy – for example, if you have itchy skin that’s keeping you awake.

What’s the difference between cetirizine and other non-drowsy antihistamines?

Other non-drowsy antihistamines, such as loratadine, desloratadine, fexofenadine and levocetirizine, seem to work just as well as cetirizine.

But cetirizine seems to be more likely to make you feel sleepy than loratadine, desloratadine or fexofenadine.

Can I take it with painkillers?

Yes, you can take cetirizine together with paracetamol or ibuprofen.

Can I take 2 types of antihistamine in 1 day?

Sometimes doctors recommend that people with a severe, itchy skin rash take 2 different antihistamines together for a few days.

As well as taking a non-drowsy antihistamine during the day (such as cetirizine or loratadine), your doctor may advise that you take a drowsy antihistamine at night time if the itching is making it difficult to sleep.

Do not take 2 antihistamines together unless recommended by your doctor.

Can I take cetirizine with other hay fever treatments?

Yes, it’s fine to take cetirizine together with some other hay fever treatments – for example, steroid nasal sprays (such as beclometasone (Beconase), Rhinocort Aqua and Flixonase Nasules) or eye drops.

Can I take cetirizine at higher doses than on the packet?

Your doctor may prescribe a higher dose of cetirizine (up to 4 times the usual dose) for you or your child, for a severe, itchy skin rash or swelling under the skin (angioedema).

Taking high doses of cetirizine is not suitable for everyone though. Speak to your doctor if you think cetirizine is not working for you.

Will it affect my fertility?

There’s no evidence to suggest that taking certirizine will reduce fertility in either men or women.

Speak to a pharmacist or your doctor before taking it if you’re trying to get pregnant.

Will it affect my contraception?

Cetirizine does not affect any type of contraception, including the combined pill and emergency contraception.

However, if cetirizine makes you vomit or have severe diarrhoea for more than 24 hours, your contraceptive pills may not protect you from pregnancy. Check the pill packet to find out what to do.

Read more about what to do if you’re on the pill and you’re being sick or have diarrhoea.

Can lifestyle changes relieve hay fever?

It’ll help if you do not spend too much time outside if the pollen count is high.

Tips for when you’re outside

• Do not cut grass or walk on grass.
• Wear wraparound sunglasses to stop pollen getting into your eyes.
• Put Vaseline around your nostrils to help trap pollen.
• Shower and change your clothes after you have been outside to wash off pollen.

Tips for when you’re inside

• Keep windows and doors shut as much as possible.
• Vacuum regularly and dust with a damp cloth.
• Do not keep fresh flowers in the house.
• Do not smoke or be around smoke as it makes hay fever symptoms worse.

Uses, Side Effects, and Precautions

Cetirizine is an over-the-counter drug that can relieve mild to moderate allergy symptoms.

Cetirizine is an allergy medication that you can buy over the counter (OTC) at a pharmacy. That is, you don’t need a prescription.

Cetirizine comes in capsules and tablets. You typically take it just once per day, and it begins to work quickly.

It’s inexpensive, too­ — usually less than $1 per day for brand-name versions (Zyrtec, Aller-Tec, and Alleroff), and even less for generic products.

Generally, cetirizine is a safe and effective drug, but you should be aware of certain warnings and precautions when taking this drug. Learn how this drug works, what it’s used for, and how to take it safely.

If you have year-round allergies, or seasonal allergies like hay fever, your doctor may recommend cetirizine. Cetirizine may help relieve allergy symptoms, but it doesn’t prevent them.

When you come in contact with substances that you may be allergic to (allergens), your body produces a chemical called histamine. Histamine causes most of the symptoms related to allergic reactions.

Cetirizine is an antihistamine. It blocks the effects of histamine.

Cetirizine helps relieve mild to moderate allergy symptoms, such as:

• sneezing
• runny nose
• itchy or watery eyes
• itchy throat or nose

These reactions can happen after you touch or inhale allergens such as plant pollen, mold, or pet dander. Allergies usually affect your nose, sinuses, throat, and other areas of your upper respiratory system.

Cetirizine also helps relieve hives. Hives are itchy, raised rashes on the skin. They often occur with food or medication allergies.

Adults and children 6 years and older can take cetirizine capsules and tablets.

The usual dosage for adults younger than 65 years and children who are 6 years and older is one 10-milligram (mg) dose per day.

You shouldn’t take more than 10 mg in 24 hours. Your doctor may recommend a 5-mg dose once or twice per day if your allergies are mild.

Talk to your doctor about dosage for people who:

• are 2 to 6 years old
• are older than 65 years
• have liver or kidney disease

Cetirizine is a newer, second-generation antihistamine. Unlike first-generation antihistamines, cetirizine is less likely to cause side effects such as dangerous drowsiness, dry mouth, blurred vision, and overheating.

That said, Cetirizine can cause adverse effects, such as:

• some drowsiness
• excessive tiredness
• dry mouth
• stomach pain
• diarrhea
• vomiting

Tell your doctor about any unexpected side effects that you have while taking cetirizine. Also, discuss any ongoing or bothersome side effects. These side effects are usually not emergencies.

Following are a few things to consider before taking cetirizine.

Be careful using machinery

Even though cetirizine doesn’t usually cause drowsiness, some people respond differently when taking it, especially in the first few doses.

Be cautious. Don’t drive your car or use machinery until you know for sure how your body will respond to cetirizine.

Check the ingredients

Don’t use cetirizine if you have ever had an allergic reaction to it or to any of the ingredients in it. Also, steer clear of cetirizine if you’re allergic to any antihistamine that contains hydroxyzine.

Use caution if you’re pregnant or breastfeeding

Talk to your doctor or healthcare provider before you take cetirizine if you are pregnant or planning to become pregnant, or if you’re breastfeeding. Taking cetirizine is generally safe during pregnancy.

Talk to your doctor if you have certain conditions

If you have liver or kidney disease, ask your doctor about taking cetirizine. If your doctor feels it’s safe for you to take, they may recommend taking less than the typical dosage.

Cetirizine does interact with other substances.

For example, avoid consuming alcoholic drinks while you take cetirizine. Doing so may be dangerous. Mixing cetirizine with alcohol can cause drowsiness or make you less alert.

If you take any type of tranquilizer, sedative, or sleep aid, make sure to mention this to your doctor before you use cetirizine.

Mixing cetirizine with drugs that depress your central nervous system can increase sleepiness. It can also further affect your mental and nervous system functions.

There is a possibility of a drug interaction between cetirizine and theophylline. Theophylline (Theo-24) is a drug that some people with asthma and other lung problems take.

In some instances when the two drugs were taken, it took longer for cetirizine to leave the body. However, the interaction may be dose-related. It has only been reported with daily theophylline doses of 400 mg or more.

Talk to your doctor if you take theophylline and are considering cetirizine.

Cetirizine-D and brand-name versions, such as Zyrtec-D, are combination drugs. The “D” stands for decongestant. These drugs contain both cetirizine and the decongestant pseudoephedrine.

Pseudoephedrine is a stimulant and can make certain health conditions worse. Your doctor may tell you that cetirizine-D is not for you if you have any of these conditions:

• heart disease
• thyroid disease
• diabetes
• glaucoma
• high blood pressure
• enlarged prostate with urinary retention

Like any drug, especially OTC medication, you should understand all of the considerations before you start taking Cetirizine.

Talk to your doctor about any questions you have about your symptoms and any other conditions you may have. Your doctor may recommend a different antihistamine or a combination drug of cetirizine and another product that may require a prescription.

Here are a few questions you might ask your doctor about cetirizine:

• Is cetirizine a good choice for me? What are my options and alternatives?
• How often should I take cetirizine, and how much should I take?
• What effects will I notice after I take cetirizine?
• Can I take cetirizine with my other medications and health conditions?
• Are there any other dangers or risks associated with this medication?
• What are the signs of an emergency, and what should I do in case of an emergency?

Cetirizine tablets

In addition to capsules, cetirizine comes in tablets that you can swallow, chew, or let dissolve in your mouth.

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Dosage, analogues, active substance, for which it is prescribed

Date of publication: 25.08.2022 POSSIBLE SIDE EFFECTS. A SPECIALIST’S CONSULTATION IS REQUIRED.

• Zyrtec: what is it for
• Zyrtec: active ingredient
• Zyrtec: composition
• Zirtek: dosage
• Zirtek: drops for children
• Zirtek: analogues
• Zirtek or Zodak: which is better
• Zirtek or Cetrin: which is better
• Zirtek or Erius: which is better 9 0016
• Summary
• Ask an expert on the topic of the article

Allergic rhinitis is a disease accompanied by itching in the nasal cavity, endless watery discharge from the nose, paroxysmal sneezing and absolute nasal congestion. And such symptoms appear with the beginning of flowering plants. It’s all about the reaction of the body to irritating factors from the outside. In the case of allergic rhinitis, this is plant pollen.

During this period, people suffering from this disease are helped by antihistamines. One of them is Zyrtec. We asked pharmacist Kristina Khokhrina to tell us more about it, and this is what she told us: what it is used for, what is included in the composition of the product, in what dosage it is used and whether it is suitable for children. We also provided a small list of similar antihistamines and found differences between Zirtek and Zodak, Citrine and Erius.

All products Zyrtec

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Zyrtec: what

Zyrtec is used for for allergies. The main indications for the use of Zirtek:

• allergic rhinitis
• allergic conjunctivitis
• symptoms of chronic urticaria

The drug acts on the skin one hour after ingestion. Maximum efficiency is achieved within 2-12 hours. The effect gradually decreases, but persists for a day.

Zyrtec: active ingredient

Zyrtec: composition

Zyrtec is available in two forms: drops and tablets. Let’s talk about the composition of both drugs. The active substance in both forms is the same, only the auxiliary components change, since they determine the form of the drug.

Zyrtec drops: glycerol, propylene glycol, sodium saccharinate, methylparabenzene, propylparabenzene, sodium acetate, glacial acetic acid, purified water.

Zyrtec tablets: microcrystalline cellulose, lactose monohydrate, colloidal silicon dioxide, magnesium stearate, hypromellose, titanium dioxide, macrogol.

Zyrtec: dosage

The dosage of Zyrtec is determined by the amount of active ingredient per 1 ml drops or 1 tablet. In both cases, cetirizine is contained in a dosage of 10 mg.

The drug is prescribed for adults and children from 6 months. For each age, a certain dose is established. The manufacturer recommends taking Zirtek in the evening, as the symptoms of allergic diseases are most pronounced at night. It is taken with or without food and can be taken with water as needed.

Adults are advised to take 20 drops or 1 tablet once a day, which corresponds to a dosage of the substance 10 mg. Reception Zirtek in drops can be single in the evening or divided into 2 doses. For example, 10 drops in the morning and evening.

Zyrtec side effects

Zyrtec may rarely cause the following side effects:

• general fatigue
• dizziness
• headache
• abdominal pain
• dry mouth
• nausea
• drowsiness

Children may additionally develop diarrhea. When taking medication, pay attention to your condition. If any changes appear, described or not described in the instructions, or if allergy symptoms increase, consult a doctor.

Zyrtec Drops for Children

Zyrtec should only be used in children aged 6 to 12 months on prescription and under the supervision of a physician. The drug is prescribed depending on age:

• 6 to 12 months: Take 5 drops (2.5 mg) once a day
• 1 to 6 years: Take 5 drops (2.5 mg) twice a day in the morning and evening, or 10 drops (5 mg) once a day in the evening
• 6 to 12 years: Take 20 drops (10 mg) once daily
• over 12 years old: take 20 drops (10 mg) once a day

Zyrtec may be used during pregnancy after consulting a physician only if the intended benefit to the mother outweighs the potential risk to the fetus. The same applies to use during lactation, since cetirizine passes into the mother’s breast milk.

Zyrtec: analogues

Zyrtec is one of the representatives of the group of antihistamines. Its analogues contain the same active ingredient: cetirizine:

• Cetirizine
• Zincette
• Zodak
• Cetrin
• Sensor
• Soloneks

Preparations with a different composition, for example, Erius, can also be analogues of Zirtek. Let’s compare Zodak with some of the remedies from this list.

Zyrtec or Zodak: which is better

The preparations have the same active substance, which defines them as antiallergic agents. Indications for use, dosage of the active substance, side effects and other characteristics of Zirtek and Zodak are the same.

The drugs are as similar as possible and even have the same forms of release: drops and tablets. The only difference is the manufacturers. Zyrtec is made in Switzerland, and Zodak is made in Russia, which is reflected in the price of the funds. Therefore, when choosing what is better to buy: Zodak or Zirtek, be guided by your preference, since the drugs are identical in terms of effectiveness.

Zyrtec or Cetrin: which is better

Similar to Zyrtec, Cetrin contains the same active ingredient in the same dosage of tofu. According to their characteristics, the preparations are identical, except that only Cetrin’s indications are slightly wider. It is additionally used for:

• itching allergic dermatoses: atopic dermatitis, etc.
• angioedema angioedema

Cetrin is available in tablet form only and is indicated for use in adults and children over 6 years of age, just like Zyrtec tablets. Manufacturers of drugs are also different, Citrine is produced in India. When choosing products, pay attention to the age of the patient and your preference in the manufacturer.

Zirtek or Erius: what is better

Zirtek and Erius are drugs for allergic manifestations. Their most important difference is the active substance.

Erius – contains desloratadine. It is produced in the form of tablets and syrup. The dosage of the active substance is 5 mg per 1 tablet and 0.5 mg per 1 ml of syrup. Erius is used by adults and children from 12 years old, and syrup can be given from 1 year old. The use of Erius does not adversely affect driving.

The method of administration depends on the age of the patient. Of course, manufacturers also differ: Erius is a Belgian drug.

Zyrtec – contains cetirizine. There are much more contraindications for use than Erius. Caution should be exercised when driving vehicles, as cetirizine causes drowsiness.

Thus, when choosing an antihistamine Erius or Zodak, pay attention to the list of contraindications and side effects. Especially if your activity is connected with increased concentration of attention.

All products Cetrin

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All products Zodak

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All products Erius

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Summary

• Zirtek is an antihistamine that is used to eliminate allergic reactions in allergic rhinitis and conjunctivitis, as well as urticaria.
• The active substance of Zyrtec is cetirizine, and the auxiliary components depend on the form of release: drops or tablets.
• The dosage of Zyrtec is the same, for example, 1 tablet or 20 drops of the drug contains 10 mg of the active ingredient.
• Both forms of Zyrtec are suitable for children, tablets can be taken from 6 years and drops from 6 months.
• Zyrtec analogues include many products, some of them have different active ingredients.
• When comparing Zyrtec with Zodak, we found differences only in drug manufacturers. Cetrin is distinguished by the absence of a release form in the form of drops and also by the manufacturer. But Erius has the largest number of differences, which we described in the article.

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TECHNICIAN

Recommended for: ¹

• perennial and seasonal
  allergic rhinitis
• allergic conjunctivitis
• chronic idiopathic
  urticaria

runny nose

lacrimation

redness
eye

itching

stuffiness
nose

sneezing

• Drops for children over 6 months*
• Sugar Free Zyrtec® Drops,
  Colors and Flavors,
  Zyrtec Tablets Free
  cornstarch ¹
• Original
  Allergy Latest Generation ^3.4

* Use in children from 6 to 12 months is possible only
by prescription and under strict medical
control

Original
drug ³

allergist and pediatrician’s choice 2020 ²

Validated in a large number of clinical trials

^{4 902 13}

Tablets and drops for
adults and children over 6 years old ¹

Drops

Pills

• For allergy symptoms for children over 6 months ^*
• Helps alleviate symptoms of allergic rhinitis and urticaria all day long ^{1. 6}
• Zyrtec® drops do not contain sugar, dyes or flavors, so Zyrtec® does not cause
  additional allergic reactions associated with these substances ^1.7
• “No. 1 in the appointment of Russian pediatricians and allergists in 2020” ²

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• For allergy symptoms for adults and children over 6 years old ¹
• Helps alleviate symptoms of allergic rhinitis and urticaria all day long ^1.6
• Zyrtec® tablets do not contain cornstarch, so Zyrtec® does not cause additional
  allergic reactions associated with this substance ^1.7
• Zyrtec® is approved for use during pregnancy with caution ^{* 1}
• “No. 1 according to the appointments of Russian allergists in 2020” ^*

^* According to the study PrIndexTM “Monitoring of doctors’ prescriptions” conducted by Ipsos Comcon LLC
in the spring of 2020 in large cities of Russia, of all medicines belonging to the category R06A
“Antihistamines for systemic use”, prescribed by allergists
outpatient clinics in large cities of Russia, Zyrtec® accounts for 11.