CL Answers

Which supplements or foods may cause kidney damage?

Find out which supplements or foods may damage your kidneys. ConsumerLab explores possible kidney side effects of supplements and foods including chromium, creatine, cherries, protein, vitamin C, and others.

What are the health benefits of tart cherry juice?

See the evidence for tart cherry juice health benefits from clinical studies. Find out if tart cherry has anti-inflammatory effects, if it can improve sleep, lower high blood pressure, or help for muscle pain and osteoarthritis.

Do any supplements or lifestyle changes reduce the symptoms of tinnitus? Is it true that some supplements can cause tinnitus?

Learn which supplements can ease tinnitus, including melatonin and pine bark extract. Understand which may actually cause tinnitus.

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.

Does urolithin A reduce age-related muscle decline, osteoarthritis, or other age-related diseases?

Find out if urolithin A may improve age-related muscle decline and learn about its safety.

Supplements for Eczema: Some May Help, While Others Don’t

Certain supplements may reduce symptoms of atopic dermatitis (the most common form of eczema), while others don't seem to work. Find out if gamma-linolenic acid, L-histidine, phytoceramides, probiotics, and other supplements may be beneficial.

Do supplements help with Parkinson’s disease treatment or prevention?

Learn what has been shown with vitamins D and E, niacin, CoQ10, melatonin, creatine, SAMe, NAC, valerian, CoQ10, and CBD, as well as with coffee and the Mediterranean and MIND diets for treating and/or preventing Parkinson's disease.

Which foods and supplements contain lead, cadmium, or arsenic?

Discover which foods and dietary supplements contain lead and other metals, the limits, who’s testing, and how to stay safe.

Where to Safely Buy Real Vitamins and Supplements Online, Not Fakes or Counterfeits

ConsumerLab explains how to avoid counterfeit vitamins and supplements when shopping online on Amazon, Walmart.com, and other sites. Learn to identify authorized sites and sellers and avoid fake supplements. Use the brand-by-brand guide to protect yourself from risk.

Here’s What You Should Look For In Toothpaste and Mouthwash, and Our Top Picks

Learn about ingredients you want in your toothpaste, mouthwash and other dental products and which ingredients you may want to avoid.