CL Answers

Can vitamin C or other supplements cause blood in the urine and painful urination?

Find out if vitamin C or other supplements including cranberry, garlic, and vitamin D can cause bloody or painful urination.

What is the ingredient zeolite I see in Natural Cellular Defense and other detox supplements? Does it help in any way?

Learn what zeolite is and why it is found in many detox supplements like Waiora's Natural Cellular Defense, Get Healthy Again Zeolite, and Ultra Liquid Zeolite.

What is Marine-D3 with Seanol-P, and does it live up to anti-aging claims?

Learn about the evidence for Marine-D3, a supplement from Marine Essentials that contains Seanol, including evidence from clinical studies on aging.

3 Tips to Prevent Powdered Supplements from Clumping

Learn more about how powdered supplements compare to capsules and if clumping is worrisome.

Must I take amino acid supplements on an empty stomach? Can I take them with other amino acids or with food to help with swallowing capsules?

Find out if you should take amino acid pills on an empty stomach or with food in order to maximize absorption, and more about the best way to take amino acid supplements.

Do vitamins, minerals or other supplements lose effectiveness with exposure to high temperatures?

Are vitamins and supplements susceptible to heat? Find out if mail ordering during the summer is safe.

Is it better to get vitamins from foods or supplements, and are natural vitamins better than synthetic vitamins?

Learn more about the benefits of getting vitamins from food versus supplements, natural versus synthetic vitamins, and more.

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.