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Product Review

Turmeric and Curcumin Supplements and Spices Review

See Our Top Picks Among Turmeric Products

CL Answer

Which supplements help with arthritis?

Learn more about supplements for joint health, including products such as Wobenzym and Zyflamend and ingredients such as collagen, curcumin, glucosamine and chondroitin, hyaluronic acid, magnesium, omega-3 fatty acids, palmitoylethanolamide (PEA), SAMe, and others.

Supplements for Osteoarthritis and Rheumatoid Arthritis -- Women With Arthritic Hands

Clinical Update

5/28/2025

Zyflamend for Joint Health

We recently tested Zyflamend, a supplement promoted for pain relief and joint support. We checked levels of heavy metals, such as lead, and potentially beneficial curcumin compounds expected from its two turmeric extracts. See what we found in our Turmeric Supplements Review and learn more about the evidence behind Zyflamend in our article about supplements for arthritis.

Clinical Update

8/25/2023

Zyflamend for Joint Pain?

Can taking Zyflamend, a supplement with 10 herbal extracts, help improve symptoms of arthritis or other types of joint pain? Find out what research suggests in our article about supplements for arthritis.

CL Answer

Can turmeric or curcumin with black pepper extract cause constipation? I had this problem, but it resolved when I switched to a curcumin supplement without piperine (black pepper extract).

Learn more about black pepper extract, why it is added to turmeric/curcumin supplements, and if it can cause gastrointestinal effects.

Turmeric or Curcumin

Product Review

Joint Health Supplements Review (Glucosamine, Chondroitin, MSM, Boswellia, Collagen and Turmeric)

18% of Joint Health Supplements Failed to Pass Our Tests. See Which Passed or Failed, and Our Top Picks.

Joint Health Supplements Review 2025

News Release

November 13, 2007

ConsumerLab.com finds some "red wine" supplements deliver less resveratrol than expected; Wide range in dose and price

WHITE PLAINS, NEW YORK — NOVEMBER 13, 2007 — ConsumerLab.com reported today that its tests of supplements containing resveratrol — a compound promoted as "life-extending" — revealed two products providing only 27% and 58% of their listed amounts of resveratrol.