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Side effects of taking cranberry pills: Generic, Uses, Side Effects, Dosages, Interactions, Warnings

Overview, Uses, Side Effects, Precautions, Interactions, Dosing and Reviews

Overview

Cranberry (Vaccinium macrocarpon) is an evergreen shrub that grows in bogs in North America. It produces dark red fruits that contain salicylic acid.

Chemicals in cranberries keep bacteria from sticking to the cells in the urinary tract. But they don’t seem to be able to remove bacteria that are already stuck to these cells. This might explain why cranberry helps prevent urinary tract infections (UTIs), but doesn’t help treat them.

People commonly use cranberry to prevent UTIs. Cranberry is also used for kidney stones, enlarged prostate, the common cold, and many other conditions, but there is no good scientific evidence to support these uses.

Don’t confuse cranberry with cramp bark, lingonberry, or uva ursi. These are sometimes also called cranberry but they are not the same.

Uses & Effectiveness ?

Possibly Effective for

  • Infections of the kidney, bladder, or urethra (urinary tract infections or UTIs). Taking certain cranberry products by mouth seems to help prevent UTIs in adult females. But it doesn’t seem to help people with neurogenic bladder, a condition caused by a spinal cord injury. It’s also not clear if it helps in children, elderly adults, or pregnant adults. It’s important to note that while cranberry might help prevent UTIs in some people, it shouldn’t be used to treat UTIs.

There is interest in using cranberry for a number of other purposes, but there isn’t enough reliable information to say whether it might be helpful.

Side Effects

When taken by mouth: Cranberry is commonly consumed in foods. Cranberry juice and cranberry extracts are likely safe for most adults. Drinking too much cranberry juice might cause some side effects such as mild stomach upset and diarrhea in some people.

Special Precautions and Warnings

Pregnancy and breast-feeding: Cranberry is commonly consumed in foods. There isn’t enough reliable information to know if cranberry is safe to use in larger amounts when pregnant or breast-feeding. Stay on the safe side and stick to food amounts.

Children: Cranberry is commonly consumed in foods. There isn’t enough reliable information to know if cranberry is safe to use as medicine or what the side effects might be.

Aspirinallergy: Cranberries contain significant amounts of salicylic acid. Salicylic acid is similar to aspirin. Avoid drinking large quantities of cranberry juice if you are allergic to aspirin.

Diabetes: Some cranberry juice products are sweetened with extra sugar. If you have diabetes, stick with cranberry products that are sweetened with artificial sweeteners.

Kidney stones: Cranberry juice and cranberry extracts contain a large amount of a chemical called oxalate. Since oxalate is found in kidney stones, cranberry might increase the risk of kidney stones. If you have a history of kidney stones, stay on the safe side and avoid taking cranberry extract products or drinking a lot of cranberry juice.

Interactions ?

    Moderate Interaction

    Be cautious with this combination

  • Warfarin is used to slow blood clotting. Cranberry might increase how long warfarin is in the body, and increase the chances of bruising and bleeding. Be sure to have your blood checked regularly. Your warfarin dose might need to be changed.

  • Cranberry might decrease how quickly the body breaks down atorvastatin. This might increase the effects and side effects of atorvastatin. Avoid drinking large amounts of cranberry juice if you are taking atorvastatin.

  • Some medications are changed and broken down by the liver. Cranberry might change how quickly the liver breaks down these medications. This could change the effects and side effects of these medications.

  • Cranberry might decrease how quickly the body breaks down nifedipine. Drinking cranberry juice while taking nifedipine might increase the effects and side effects of nifedipine.

    Minor Interaction

    Be watchful with this combination

  • Some medications are changed and broken down by the liver. Cranberry might change how quickly the liver breaks down these medications. This could change the effects and side effects of these medications.

  • Cranberry might decrease how quickly the body breaks down diclofenac. Drinking cranberry juice while taking diclofenac might increase the effects and side effects of diclofenac.

Dosing

Cranberry is commonly consumed in the diet in juices, jellies, sauces, and other foods.

As medicine, cranberry dried powder has most often been used by adults in doses of 250-1500 mg by mouth daily for up to 6 months. Cranberry extract has most often been used in doses of 120-1600 mg by mouth daily for 12 weeks. And cranberry juice drinks are often used in doses of 120-750 mL daily for up to 90 days. Speak with a healthcare provider to find out what type of product and dose might be best for a specific condition.

View References

CONDITIONS OF USE AND IMPORTANT INFORMATION: This information is meant to supplement, not replace advice from your doctor or healthcare provider and is not meant to cover all possible uses, precautions, interactions or adverse effects. This information may not fit your specific health circumstances. Never delay or disregard seeking professional medical advice from your doctor or other qualified health care provider because of something you have read on WebMD. You should always speak with your doctor or health care professional before you start, stop, or change any prescribed part of your health care plan or treatment and to determine what course of therapy is right for you.

This copyrighted material is provided by Natural Medicines Comprehensive Database Consumer Version. Information from this source is evidence-based and objective, and without commercial influence. For professional medical information on natural medicines, see Natural Medicines Comprehensive Database Professional Version. © Therapeutic Research Faculty 2018.

Are Cranberry Pills Good for You? Benefits, Side Effects and Dosage

Cranberry supplements may provide antioxidants and reduce your risk of developing a urinary tract infection, among other benefits. But they may interact with certain medications.

Cranberries are small, tart, bright-red berries that are a popular treat, especially during the holiday season.

They’re packed with antioxidants and provide many health benefits.

Cranberry pills, which are made from dried, powdered cranberries, offer an easy way to enjoy these benefits without having to eat cranberries every day.

This articles reviews the most common uses for cranberry pills, their potential health benefits and side effects, and recommended dosage.

Cranberry pills are small tablets or capsules made from dried, powdered cranberries.

They provide many of the same health benefits as fresh cranberries.

Some cranberry pills also contain other ingredients, such as vitamin C or probiotics, to enhance their effects.

Specifics vary by brand, but one serving of cranberry pills is typically equivalent to an 8-ounce (237-ml) glass of pure cranberry juice.

Cranberry pills are available over the counter at drugstores or can be purchased online.

Summary

Cranberry pills are made from dried, powdered cranberries and may contain additional ingredients to enhance their effects. They can be purchased over the counter and provide many of the same benefits as fresh cranberries or cranberry juice.

Cranberry pills may be an effective way to prevent recurring urinary tract infections (UTIs).

Cranberries contain compounds called proanthocyanidins, which prevent E. coli bacteria from attaching to the lining of your urethra and bladder (1, 2).

If bacteria can’t stick to the tissues, they are unable to multiply and cause an infection.

Several studies have found that taking cranberry pills containing 36 mg of proanthocyanidins every day for two months can significantly reduce the frequency of UTIs, especially in women (3, 4, 5, 6).

Other studies have found no beneficial effects in different populations, including elderly people living in nursing homes or those with bladder disorders (7, 8, 9, 10).

It is unclear whether cranberry pills are as effective as traditional antibiotics at preventing UTIs, as studies have found conflicting results (11, 12).

These mixed conclusions could be due to differences in study design or because cranberry may not be as effective at preventing the 25–35% of UTIs caused by fungi or bacteria other than E. coli (13, 14, 15, 16).

Summary

Cranberry pills contain proanthocyanidins, which prevent E. coli bacteria from attaching to the urinary tract and causing painful infections.

Cranberries are full of antioxidants, which protect your body from damage caused by free radicals.

Free radical damage has been linked to many chronic illnesses, including heart disease and diabetes (17, 18).

Interestingly, cranberries contain more antioxidants than many other commonly eaten fruits and berries (19).

Some of the compounds in cranberries are even more effective than vitamin E, one of the body’s most important antioxidants, at fighting free radicals (20, 21).

Since cranberry pills are made from dried, powdered cranberries, they contain an even higher concentration of antioxidants than fresh fruit or prepared products like cranberry sauce or cranberry jelly (22).

Even though cranberry pills are made from dried, powdered cranberries, their antioxidant content remains active. In fact, taking cranberry supplements every day for eight weeks has been shown to significantly reduce markers of oxidative stress in the body (23).

Summary

Cranberries and cranberry pills contain very high levels of antioxidants, which protect your body from free radical damage linked to various chronic illnesses.

While research on cranberry pills is somewhat limited, studies on cranberry juice and cranberry extracts suggest they have following benefits:

  • Improved heart health: Regularly drinking cranberry juice may lower your risk of heart disease by increasing “good” HDL cholesterol, reducing inflammation and preventing cholesterol oxidation (24, 25, 26, 27).
  • Protection against stomach ulcers: Certain compounds in cranberry juice can help eliminate H. pylori bacterial infections in the stomach, reducing your risk of stomach ulcers (28, 29, 30, 31).
  • Better blood sugar control: Several studies have found that cranberry juice can significantly reduce blood sugar levels in people with diabetes (32, 33, 34).
  • Cancer protection: Test-tube and animal studies have shown that compounds found in cranberries may protect against cancer and slow the growth of tumors (35, 36, 37, 38).
  • Healthier teeth and gums: The same cranberry compounds that prevent bacteria from attaching to the urinary tract also prevent bacteria from overgrowing in your mouth, thus reducing cavities and gum disease (39).
  • Increased immunity: Several small studies have found that compounds in cranberry juice can boost immunity and reduce symptoms of the flu (40, 41, 42).

More studies are needed to determine whether cranberry pills would have the same benefits, but studies on other cranberry products are promising.

Summary

Cranberry juice and extracts may boost immunity, lower blood sugar in people with diabetes and protect against cancer, heart disease, stomach ulcers, cavities and gum disease. Cranberry pills may have similar effects, but more research is needed.

Since cranberries are so tart, many cranberry recipes and products contain lots of sugar.

The American Heart Association recommends that women and men consume no more than 25 and 37.5 grams of added sugar each day, respectively (43).

Just one-fourth cup of canned cranberry sauce or one cup of a cranberry juice cocktail contains over 10 grams of added sugar, making it difficult to stay within these guidelines.

Eating large amounts of added sugar has been linked to the development of heart disease and diabetes, so it is wise to keep your intake in check (44, 45, 46).

Cranberry pills can be a great way to enjoy the health benefits of cranberries without the negative effects of added sugar.

Summary

Many cranberry products contain a lot of sugar to mask cranberry’s naturally tart taste, but eating too much added sugar is bad for your health. Cranberry pills offer a way to experience the health benefits of cranberries without consuming extra sugar.

Cranberry pills are relatively well tolerated, but a handful of people have reported stomach discomfort, abdominal pain or increased urination after taking the pills (9, 11, 23, 47).

Cranberries are also high in salicylic acid, a naturally occurring anti-inflammatory compound (48, 49).

Anyone who is allergic or sensitive to salicylates, including aspirin, may want to avoid cranberry pills since an adverse reaction is theoretically possible (50).

Furthermore, those with a history of kidney stones should consult their doctor before taking cranberry supplements. Some research suggests that they may increase the risk of developing calcium-oxalate stones (51, 52, 53).

There have also been a few reported cases of cranberry supplements increasing the effects of the blood-thinning drug Warfarin, so it is important to consult your doctor or pharmacist before starting any new supplements (54, 55).

Summary

Cranberry pills are relatively safe but may cause stomach upset in some people. Anyone with a sensitivity or allergy to salicylates, a history of kidney stones or those taking the blood-thinning drug Warfarin may want to avoid cranberry supplements.

There is no standard dosage for cranberry pills, and amounts can vary widely between brands.

In general, research has found that taking 500–1,500 mg of dried cranberry powder per day prevents urinary tract infections. Moreover, 1,200 mg of dried cranberry juice powder can reduce oxidative stress (11, 23, 56, 57).

Newer research has focused on the concentration of proanthocyanidins, as they are one of the main active ingredients in cranberry pills.

Products containing at least 25% proanthocyanidins or 36 mg per serving appear to be the most effective at preventing urinary tract infections (58, 59, 60, 61).

More research is needed to determine the ideal dosage for cranberry pills for various purposes.

Summary

There is no official recommended dosage for cranberry pills, but taking at least 500 mg of powdered cranberry or 36 mg of proanthocyanidins per day appears to prevent urinary tract infections.

Cranberry pills are a great option for people who want to experience some of the health benefits of cranberries without having to eat them every day.

They are packed with antioxidants and can help reduce the frequency of urinary tract infections in some people.

Also, they may promote heart health, improve blood sugar control, boost immunity and protect against cancer, cavities and stomach ulcers.

Dosages of up to 1,500 mg per day are safe for most.

Cranberry pills may be worth a try for those who get frequent urinary tract infections or want some extra antioxidant support.

Are cranberry tablets good for you? Benefits, Side Effects & Dosage

Cranberries are small, tart, bright red berries that are a popular treat, especially during the holiday season.

They are rich in antioxidants and provide many health benefits.

Cranberry Tablets, made from dried, powdered cranberries, offer an easy way to enjoy these benefits without having to eat cranberries every day.

This article reviews the most common uses for cranberry tablets, potential health benefits, side effects, and recommended dosage.

  • What are cranberry tablets?
  • Prevention of urinary tract infections
  • The content of antioxidants
  • other advantages
  • Sugar content
  • Side effects
  • Dosage

What is cranberry tablets?

Cranberry tablets are small tablets or capsules made from dried, powdered cranberries.

They provide many of the same health benefits as fresh cranberries.

Some cranberry tablets also contain other ingredients such as vitamin C or probiotics to enhance their effect.

Specifics vary by brand, but one serving of cranberry tablets is usually equivalent to an 8-ounce (237 ml) glass of pure cranberry juice.

Cranberry tablets are available without a prescription from pharmacies or can be purchased online.

General Information: Cranberry Tablets are made from dried, powdered cranberries and may contain additional ingredients to enhance their effect. They are available over the counter and provide many of the same benefits as fresh cranberries or cranberry juice.

Cranberry tablets help prevent urinary tract infections

Cranberry tablets can be an effective way to prevent recurring urinary tract infections (UTIs).

Cranberries contain proanthocyanidins, which prevent E. coli bacteria from attaching to the lining of your urethra and bladder.

If bacteria cannot adhere to tissues, they cannot multiply and cause infection.

Several studies have shown that taking cranberry tablets containing 36 mg of proanthocyanidins every day for two months can significantly reduce the incidence of urinary tract infections, especially in women.

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Other studies have found no beneficial effects in various populations, including elderly people living in nursing homes or people with bladder disorders.

It is unclear whether cranberry tablets are as effective as traditional antibiotics in preventing urinary tract infections, as studies have found conflicting results.

These mixed conclusions may be due to differences in study design or because cranberries may not be as effective in preventing 25-35% of urinary tract infections caused by fungi or bacteria other than E. coli.

Summary: Cranberry tablets contain proanthocyanidins, which prevent E. coli bacteria from attaching to the urinary tract and causing painful infections.

Cranberry tablets contain powerful antioxidants

Cranberries are full of antioxidants that protect your body from damage caused by free radicals.

Free radical damage is associated with many chronic diseases, including heart disease and diabetes.

Interestingly, cranberries contain more antioxidants than other commonly consumed fruits and berries.

Some compounds in cranberries are even more effective than vitamin E, one of the body’s most important antioxidants, at fighting free radicals.

Because cranberry tablets are made from dried, powdered cranberries, they contain an even higher concentration of antioxidants than fresh fruit or prepared foods such as cranberry sauce or cranberry jelly.

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Although cranberry tablets are made from dried, powdered cranberries, their antioxidant content remains active. Taking cranberry supplements daily for eight weeks has been shown to significantly reduce markers of oxidative stress in the body.

General Information: Cranberry and cranberry tablets contain very high levels of antioxidants that protect your body from free radical damage associated with various chronic diseases.

Other Potential Benefits of Cranberry Tablets

Although research on cranberry tablets is somewhat limited, research on cranberry juice and cranberry extracts suggests the following benefits:

  • Improved heart health: cardiac diseases by increasing the level of “good” HDL cholesterol, reducing inflammation and preventing cholesterol oxidation.
  • Stomach Ulcer Protection: Certain compounds in cranberry juice may help eliminate H. pylori bacterial infections in the stomach, reducing your risk of developing stomach ulcers.
  • Better blood sugar control: Several studies have shown that cranberry juice can significantly lower blood sugar levels in people with diabetes.
  • Cancer protection: Test-tube and animal studies have shown that compounds in cranberries may protect against cancer and slow tumor growth.
  • Healthier teeth and gums: The same cranberry compounds that prevent bacteria from attaching to the urinary tract also prevent bacterial overgrowth in your mouth, thereby reducing cavities and gum disease.
  • Immunity boost: Several small studies have shown that compounds in cranberry juice can boost immunity and reduce flu symptoms.

More research is needed to determine if cranberry tablets offer the same benefits, but research on other cranberry products is promising.

Introducing: 10 Science-Based Health Benefits of Grapefruit

General Information: Cranberry juice and extracts may boost immunity, lower blood sugar levels in people with diabetes, and protect against cancer, heart disease, stomach ulcers, cavities, and gum disease. Cranberry tablets may have similar effects, but more research is needed.

Cranberry Tablets No Added Sugar

Because cranberries are so tart, many cranberry recipes and foods are high in sugar.

The American Heart Association recommends that women and men consume no more than 25 and 37.5 grams of added sugar daily.

Just one-fourth cup of canned cranberry sauce or one cup of cranberry juice smoothie contains over 10 grams of added sugar, making it difficult to stay within these guidelines.

Eating a lot of added sugar has been linked to heart disease and diabetes, so it’s wise to keep your intake under control.

Cranberry tablets can be a great way to enjoy the benefits of cranberries without the negative effects of added sugar.

General Information: Many cranberry products are high in sugar to mask the natural tart taste of cranberries, but eating too much added sugar is bad for your health. Cranberry tablets are a way to experience the health benefits of cranberries without the extra sugar.

Side effects and interactions of cranberry tablets

Cranberry tablets are relatively well tolerated, but a handful of people have reported stomach discomfort, abdominal pain, or increased urination after taking the tablets.

Cranberries are also high in salicylic acid, a naturally occurring anti-inflammatory compound.

Anyone allergic or sensitive to salicylates, including aspirin, may want to avoid cranberry tablets as an adverse reaction is theoretically possible.

In addition, those with a history of kidney stones should consult their physician before taking cranberry supplements. Some studies show that they may increase the risk of developing calcium oxalate stones.

There have also been a few reports of cranberry supplements potentiating the effects of the blood-thinning drug warfarin, so be sure to check with your doctor or pharmacist before starting any new supplements.

General Information: Cranberry tablets are relatively safe, but may cause stomach upset in some people. Anyone with a sensitivity or allergy to salicylates, with a history of kidney stones, or taking the blood-thinning drug Warfarin may want to avoid cranberry supplements.

Recommended dosages for cranberry tablets

There is no standard dosage for cranberry tablets, and quantities can vary greatly between brands.

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Studies have shown that daily intake of 500-1500 mg of dried cranberry powder prevents urinary tract infections. What’s more, 1,200 mg dried cranberry juice powder can reduce oxidative stress.

Newer studies are focusing on the concentration of proanthocyanidins, as they are one of the main active ingredients in cranberry tablets.

Foods containing at least 25% proanthocyanidins, or 36 mg per serving, appear to be most effective in preventing urinary tract infections.

More research is needed to determine the ideal dosage of cranberry tablets for various uses.

General Information: There is no official recommended dosage for cranberry tablets, but taking at least 500 mg of powdered cranberries or 36 mg of proanthocyanidins per day seems to prevent urinary tract infections.

Summary

Cranberry tablets are a great option for people who want to experience some of the health benefits of cranberries without having to eat them every day.

They are full of antioxidants and may help reduce urinary tract infections in some people.

They may also promote heart health, improve blood sugar control, boost immunity, and protect against cancer, cavities, and stomach ulcers.

Doses up to 1500 mg per day are safe for most.

Cranberry Tablets may be worth a try for those with frequent urinary tract infections or who want additional antioxidant support.

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Are cranberry tablets good for you? Benefits | Dosage

Cranberry is a small, tart bright red berry that is a popular treat, especially during the holiday season.

It is rich in antioxidants and has many health benefits.

Cranberry Tablets, which are made from dried crushed cranberries, offer an easy way to enjoy these benefits without having to eat cranberries every day.

This article reviews the most common uses of cranberry tablets, their potential health benefits and side effects, and recommended dosage.

What are cranberry tablets?

Cranberry tablets are small tablets or capsules made from dried crushed cranberries.

They have the same health benefits as fresh cranberries.

Some cranberry tablets also contain other ingredients such as vitamin C or probiotics to enhance their effect.

Specifics vary by brand, but one serving of cranberry tablets is usually equivalent to 237 ml of pure cranberry juice.

SUMMARY:

Cranberry tablets are made from dried crushed cranberries and may contain additional ingredients to enhance their effect. They are available over the counter and offer many of the same benefits as fresh cranberries or cranberry juice.

They help prevent urinary tract infections

Cranberry tablets can be an effective way to prevent recurring urinary tract infections (UTI).

Cranberries contain compounds called proanthocyanidins that prevent E. coli bacteria from attaching to the lining of the urethra and bladder.

If bacteria cannot adhere to tissues, they cannot multiply and cause infection.

Several studies have shown that taking cranberry tablets containing 36 mg proanthocyanidins daily for two months can significantly reduce the incidence of UTIs, especially in women.

SUMMARY:

Cranberry tablets contain proanthocyanidins, which prevent E. coli bacteria from attaching to the urinary tract and causing painful infections.

They contain powerful antioxidants

Cranberries are rich in antioxidants that protect your body from damage caused by free radicals.

Free radical damage has been linked to many chronic diseases, including heart disease and diabetes.

Interestingly, cranberries contain more antioxidants than many other commonly eaten fruits and berries.

Some cranberry compounds are even more effective than vitamin E, one of the body’s most important antioxidants, in fighting free radicals.

Because cranberry tablets are made from dried, crushed cranberries, they contain an even higher concentration of antioxidants than fresh fruit or prepared foods such as cranberry sauce or cranberry jelly.

Although cranberry tablets are made from dried crushed cranberries, their antioxidant content remains active.

In fact, taking cranberry supplements daily for eight weeks significantly reduces markers of oxidative stress in the body.

SUMMARY:

Cranberries and cranberry tablets contain very high levels of antioxidants that protect your body from free radical damage associated with various chronic diseases.

Benefits

Although research on cranberry tablets is somewhat limited, studies on cranberry juice and cranberry extracts show that they have the following benefits:

  • Improved heart health: Regular consumption of cranberry juice may reduce the risk of heart disease by increasing “good” HDL cholesterol, reducing inflammation, and preventing cholesterol oxidation.
  • Stomach ulcer protection: Certain compounds in cranberry juice may help eliminate H. pylori. bacterial infections in the stomach, reducing the risk of stomach ulcers.
  • Better blood sugar control: Several studies have shown that cranberry juice can0041 reduce blood sugar levels in people with diabetes.
  • Cancer Protection: Test-tube and animal studies have shown that compounds found in cranberries may protect against cancer and slow tumor growth.
  • Healthier Teeth and Gums: The same cranberry compounds that prevent bacteria from attaching to the urinary tract also prevent bacterial overgrowth in the mouth, thereby reducing cavities and gum disease.
  • Enhanced Immunity: Several small studies have shown that compounds in cranberry juice can boost immunity and reduce flu symptoms.

SUMMARY:

Cranberry juice and extracts can boost immunity, lower blood sugar levels in people with diabetes, and protect against cancer, heart disease, stomach ulcers, tooth decay, and gum disease.

Cranberry tablets sugar free

Because cranberries are so tart, many cranberry recipes and products are high in sugar.

The American Heart Association recommends that women and men consume no more than 25 and 37.5 grams of added sugar each day, respectively.

Just one-quarter cup of canned cranberry sauce or one cup of cranberry juice smoothie contains more than 10 grams of added sugar, making these recommendations difficult to follow.

Eating a lot of added sugar has been linked to heart disease and diabetes, so it’s wise to control your intake.

Cranberry tablets can be a great way to enjoy the health benefits of cranberries without the negative effects of added sugar.

SUMMARY:

Many cranberry products are high in sugar to mask the natural tart taste of cranberries, but eating too much added sugar is bad for your health. Cranberry tablets are a way to experience the health benefits of cranberries without the extra sugar.

Side effects and interactions

Cranberry tablets are relatively well tolerated, but some people have reported stomach discomfort, abdominal pain or frequent urination after taking the tablets.

Cranberries are also rich in salicylic acid, a natural anti-inflammatory compound.

Anyone allergic or sensitive to salicylates, including aspirin, may want to avoid cranberry tablets as an adverse reaction is theoretically possible.

In addition, those with a history of kidney stones should consult their physician before taking cranberry supplements.

Some studies show that they may increase the risk of developing calcium oxalate stones.

There have also been a few reports of cranberry supplements potentiating the effects of the blood-thinning drug warfarin, so it is important to check with your doctor or pharmacist before starting any new supplements.

SUMMARY:

Cranberry tablets are relatively safe, but may cause stomach upset in some people. Anyone with a sensitivity or allergy to salicylates, a history of kidney stones, or those taking the blood-thinning drug warfarin may want to avoid cranberry supplements.

Recommended dosages

There is no standard dosage of cranberry tablets, and the number of tablets can vary greatly depending on the manufacturer.

In general, studies have shown that daily intake of 500–1500 mg of dried cranberry powder prevents urinary tract infections.