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CL Answer
Which supplements make acid reflux worse? I take many and think some are causing heartburn. Are there any supplements that help treat acid reflux?
Find out which supplements can cause or worsen acid reflux, nausea and GERD, including vitamin B6, arginine, and CoQ10.
CL Answer
What is Prelief? Does it really help for heartburn and/or bladder pain from acidic foods?
Prelief information, including what it has been claimed to do (such as helping with painful bladder, frequent urination, heartburn or indigestion from acidic foods), clinical evidence, and safety.
CL Answer
I take omeprazole (Prilosec), a proton pump inhibitor, to reduce stomach acid. Are there supplements I should avoid, or be taking, due to this drug?
Supplement interactions with proton pump inhibitor (PPI) drugs like omeprazole (Prilosec) and Nexium.
CL Answer
Is it true that low-carb or Mediterranean diets help for gastroesophageal reflux disease (GERD)?
Find out if a low-carb diet, such as the Mediterranean diet, or lifestyle changes help with gastroesophageal reflux disease (GERD).
Product Review
Ginger Supplements, Chews & Spices Review
Tests Reveal Best and Worst Ginger Supplements & Spices. Poor Quality and Lead Contamination Discovered in Some Products.
Product Review
Apple Cider Vinegar Review – Bottled Liquids and Supplements
Find the Best Apple Cider Vinegar. See Which Apple Cider Vinegar Liquids and Supplements Passed Our Tests of Quality.
Product Review
Alginate Supplements Review (For Reflux)
See Our Top Pick Alginate Supplements For Reducing Symptoms of Gastroesophageal Reflux (GERD)
CL Answer
I read that famotidine (Pepcid) may help treat COVID-19. Is this true? Might a proton pump inhibitor, like Prilosec, help?
Pepcid (famotidine) was reported to improve outcomes in people with COVID-19 in China. But is there evidence that Pepcid really helps to treat COVID-19?
CL Answer
Is it true that calcium citrate increases the absorption of aluminum?
Find out how calcium citrate can impact the absorption of aluminum in your body and if this is a problem for your health.
CL Answer
I have IBS and don't want to take medication if I can help it. I've heard that peppermint works for IBS, but is there good research to support this?
Information about using peppermint oil for irritable bowel syndrome (IBS), including clinical evidence, dosage, safety and more.
Clinical Update
9/22/2020
Caution With TUMS
A man who took several TUMS to treat heartburn was recently reported to have developed hypercalcemia (too much calcium in the blood), as noted in the Concerns and Cautions section of the Calcium Supplements Review. Learn about getting the right amount of calcium and see our Top Picks among calcium supplements.
Product Review
Lavender and Tea Tree Essential Oils Review
Oils Tested for Authenticity and Purity
CL Answer
Which supplements are helpful to have when traveling? Any tips on how to best store supplements on trips?
Find out which vitamins & supplements can be helpful when traveling, including melatonin, ginger, and more, and find out how you can carry them with you.
CL Answer
Is there evidence that d-limonene can help fight cancer?
Find out if d-limonene can help fight cancer or help for GERD (gastroesophageal reflux disorder), including evidence from clinical studies.
CL Answer
Do supplements help treat peptic ulcer disease? Should any be avoided?
Vitamins and supplements that may help with peptic ulcer disease, including probiotics, cranberry, melatonin, lactoferrin, berberine, and licorice.
CL Answer
What are the health benefits of andrographis? Can it treat colds, help with joint pain, or other conditions, and is it safe?
Learn about the health benefits of andrographis, whether it can help relieve cold symptoms, reduce pain and stiffness of osteoarthritis or rheumatoid arthritis, decrease symptoms of ulcerative colitis, or slow the growth of cancer. See the clinical evidence for the branded andrographis extract ParActin. Plus, learn about dosage, side effects and drug interactions with andrographis.
Product Review
Calcium and Bone Health Supplements Review (Including Vitamins D & K, Magnesium and Boron)
See Which Bone Health Supplements Are Top Picks and Which Fail
CL Answer
Does Z-Stack multivitamin work to boost the immune system, and is it safe?
Find out about Z-Stack, including if it can help boost the immune system and if it is safe to use at the suggested dose.
CL Answer
Which is the best form of magnesium to take - one that contains the most magnesium and is best absorbed?
Info on which is the best form of magnesium supplements to take and what to look for when choosing the best magnesium supplement. ConsumerLab.com explains.
Product Review
L-Tryptophan and 5-Hydroxytryptophan (5-HTP) Supplements Review
Choose the Best L-Tryptophan and 5-HTP Supplements. CL Tests Identify High Quality L-Tryptophan and 5-HTP (5-Hydroxy-L-Tryptophan) at the Best Value.
CL Answer
Which supplements or foods can help lower cholesterol and keep my heart healthy? Are there any to avoid?
Information about heart health supplements & vitamins that help with cholesterol, including sterol esters, CoQ10, and vitamin D, and which may be bad for the heart, like calcium.
CL Answer
Do any supplements, foods, or oils help reduce muscle pain, muscle cramps, or nighttime leg cramps?
Find out which supplements, and topical products such as magnesium creams, can help reduce muscle pain, leg cramps, and nighttime leg cramps, and which may worsen muscle cramps. Also, learn about vitamin and mineral deficiencies and common medications that can cause muscle cramps and nocturnal leg cramps.
Product Review
Digestive Enzyme Supplements Review
Big Differences in Strength Found Among Digestive Enzyme Supplements. CL Tests Reveal Which Are Best.
Product Review
Reishi Mushroom Supplements Review
Find the Best Reishi Mushroom Supplement. See How Reishi Supplements Differ.
Product Review
L-Arginine Supplements Review
Choose the Best L-Arginine Supplement. Find Out Which L-Arginine Supplement Passed CL's Tests.
CL Answer
What is graviola? Can it really help fight cancer?
Learn more about graviola, if it can really help fight cancer, and its safety.
Product Review
B Vitamin Supplements Review (B Complexes, B6, B12, Biotin, Folate, Niacin, Riboflavin & More)
See Which B Vitamins Are ConsumerLab's Top Picks!
CL Answer
Can lemon juice, lemonade, or other juices reduce my chances of getting kidney stones?
Information about lemon juice, lemonade, orange juice, cranberry juice and other juices for increasing urinary citrate and reducing the risk of kidney stones.
CL Answer
Do any supplements help with COVID-19? Do supplements like vitamin D, zinc, vitamin C, or herbals work?
Find out if natural remedies & supplements for coronavirus such as zinc, vitamin C, garlic, or elderberry help to prevent or treat COVID-19.
CL Answer
What are the health benefits of amla and is it safe?
Learn about amla (Indian gooseberry), including its potential health benefits and possible safety concerns.
CL Answer
What are the health benefits of zinc carnosine, also called polaprezinc, and is it safe?
Find out if zinc carnosine is beneficial for any GI conditions, including stomach ulcers, Helicobacter pylori infection, taste disturbances, aspirin-induced small-bowel injury and oral mucositis, and learn if it is safe.
CL Answer
Does Qualia Mind boost memory and mental function and is it worth cost?
Learn about the ingredients in Qualia Mind, whether or not we think the formula works and is safe, and if we think it's worth the cost.
Recalls & Warnings
11/10/2020
FDA Warns Immusist for Drug Claims
On October 16, 2020, the FDA issued a warning letter to Immusist, LLC following a review of the company's website, which found statements made about the company's products IMMUSIST Original and IMMUSIST Natural to be drug claims.
News Release
2/22/2022
Considering an Algae-based Supplement for Reflux? See What ConsumerLab Found
White Plains, New York, February 22, 2022 — Alginate supplements have been shown to be more effective than antacids in treating heartburn, indigestion, and other symptoms of GERD (gastrointestinal esophageal reflux disease).
Recalls & Warnings
2/04/2020
Seller of Digestion Supplements Warned for Manufacturing Violations
On January 10, 2020, the FDA issued a warning letter to Marco Pharma International LLC, which found the company's Absinthium Herbal Liquid Extract 100 ml (Absinthium), promoted for "digestive support", and other products, including S21 Multi Somaplex 100 ml (Multi Somaplex), ...
News Release
6/10/2015
ConsumerLab.com Tests Reveal Best and Worst Magnesium Supplements
White Plains, New York, June 10, 2015 — Magnesium supplements have become extremely popular, surpassing even calcium among frequent users of supplements. However, recent tests by ConsumerLab.
News Release
5/05/2002
Study finds supplement users avoid prescription drugs due to side effects, not cost — Brands top rated by users also identified in new survey by ConsumerLab.com
WHITE PLAINS, NY — March 5, 2002 — ConsumerLab.com, traditionally known for its independent laboratory evaluations of dietary supplements and nutritional products, announced surprising findings today from a new survey of supplement users.
News Release
3/06/2002
Study finds supplement users avoid prescription drugs due to side effects, not cost — Brands top rated by users also identified in new survey by ConsumerLab.com
WHITE PLAINS, NY — March 6, 2002 — ConsumerLab.com, traditionally known for its independent laboratory evaluations of dietary supplements and nutritional products, announced surprising findings today from a new survey of supplement users.
Recalls & Warnings
10/31/2017
Black Licorice Can Cause Abnormal Heart Rhythms, FDA Warns
On October 30, 2017, the FDA warned consumers that eating 2 ounces of black licorice a day for at least two weeks could cause an irregular heart rhythm or arrhythmia in adults age 40 or older.
Recalls & Warnings
4/01/2017
Maker of Prelief, Urinozinc Prostate Health Formula Warned for Manufacturing Violations
On March 16, 2017 the FDA issued a warning letter to DSE Healthcare Solutions, LLC, following a facility inspection which found the company's products, including Prelief and Urinozinc Prostate Health Formula to be adulterated because they were prepared, packed, or held under ...
Recalls & Warnings
6/04/2004
FTC Charges Marketers of Two Supplements with False Claims to Cure Range of Diseases
On June 3, 2004 the Federal Trade Commission (FTC) charged marketers of two dietary supplements with falsely claiming that their products can prevent and cure cancer and other diseases. According to the FTC’s complaint, Boston-area marketers Direct Marketing Concepts, Inc. (DMC), ITV Direct, Inc.
