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How much calcium from supplements is too much?

Too much calcium per day - how much is too much? Learn about the recommended daily intake from food & supplements and why taking too much calcium can be harmful.

I live in Canada. Does ConsumerLab.com ever test Canadian products?

Find out which Canadian products ConsumerLab.com has tested, including Jamieson, Natural Factors, Webber Naturals and Lacteeze. Our answer explains.

ConsumerLab Tests of Canadian Supplements -- Canadian flag

Should I be worried that my supplement contains "caramel coloring IV"? I've heard that it has been linked to cancer.

Learn more about caramel coloring IV, including evidence from studies on cancer.

Woman Reading Supplement Bottle Label

Does glucosamine raise "bad" LDL cholesterol?

Learn more about the link between glucosamine and cholesterol, including evidence from clinical studies.

Supplements and Water in Hand

Can white kidney bean extract really help me lose weight?

Does white kidney bean extract help promote weight loss? Find out more including evidence from clinical studies and dosage.

White Kidney Bean Extract and Weight Loss -- White kidney beans

As vitamin D is a fat-soluble vitamin, why is it necessary to take it every day?

Find out how best to take vitamin D supplements, including cautions on overdoses.

Do I need to take vitamin D daily

My supplement label warns that it contains a chemical known to the State of California to cause cancer, birth defects, or other reproductive harm, but with no additional information. Do you know why?

Learn more about warning labels indicating that a supplement contains a chemical known to the State of California to cause cancer.

Woman Examining Supplement Bottle

Is it safe to consume fish oil as a long-term food supplement?

Learn more about fish oil supplement safety including long-term use, side effects, and more.

Fish Oil

I read that turmeric may be a GI irritant. I have GI problems and wonder if I should avoid turmeric and curcumin?

Find out if turmeric/curcumin supplements can cause gastrointestinal irritability.

Is turmeric a stomach irritant? -- Turmeric Supplement

I take lisinopril (Zestril), an ACE inhibitor drug to lower blood pressure. Are there supplements I should avoid, or be taking, due to this drug?

When taking ACE inhibitors, find out which supplements should be avoided. Interaction info on Lisinopril or another ACE inhibitors.

Lisinopril, ACE Inhibitors and Supplement Interactions -- prescription bottle of lisinopril on desk with blood pressure cuff
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