CL Answers

What is magnesium stearate, what is it made from, and is it dangerous?

Learn more about magnesium stearate and its safety, based on evidence from clinical studies.

I'm over 50 and looking to take a vitamin B-12 supplement. Many contain a form of vitamin B-12 called cyanocobalamin, yet I read on the Internet that this form is toxic. Should I be concerned?

Looking to see if the cyanocobalamin form of vitamin B-12 is safe? Read research and safety information on ConsumerLab's report.

I am curious why some probiotics do not require refrigeration even though they contain some of the same bacteria in probiotics that require refrigeration? Which probiotics need to be refrigerated?

Refrigerating certain probiotic pills and other probiotic supplements is important. Get tips on how to store probiotics properly.

Lovaza, a prescription omega-3 fish oil, is very expensive. Can I get the same omega-3 oils from a supplement that costs less?

Lovaza fish oil (prescription) vs. over the counter fish oil supplements. Understand the differences in cost and benefits before you buy.

Can vitamin supplements strengthen brittle nails?

Learn more about strengthening brittle nails with vitamin B-7 (biotin), based on clinical evidence.

Will 7-keto DHEA help me lose weight?

Learn more about 7-keto DHEA supplements for weight loss, including clinical results.

Do vitamin C supplements help prevent cataracts?

Learn more about the link between vitamin C and cataracts, based on clinical evidence.

How likely are Americans to be deficient in vitamins or minerals?

Read info based on the CDC about vitamin deficiencies such as vitamin A, B-6, B-12, C, D, and E, folate, and iron in the United States.

Can supplements with antioxidants like beta-carotene and vitamins A and E cause you to die sooner?

Learn more about antioxidants like beta-carotene, vitamin A, vitamin E, and their effect on mortality, or premature death.

Is it true that vitamin D can increase the risk of prostate cancer in men?

Information on the potential link between vitamin D and prostate cancer, based on a clinical study.