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CL Answer
Which supplements and foods can help lower or control blood sugar?
Find out which supplements can help lower or control blood sugar. Supplements including turmeric/curcumin, fiber, cinnamon, and ginseng are believed to help lower blood sugar.
Clinical Update
1/20/2021
Vitamin D and Prediabetes
Can vitamin D supplementation improve insulin resistance in people with prediabetes? See what a recent study found in the Prediabetes section of our Vitamin D Supplements Review. Also, see our Top Picks for vitamin D.
Product Review
Cinnamon Supplements and Spices Review
CAUTION: Some Cinnamon Products High in Toxin. See Which Passed or Failed and our Top Picks! .
Product Review
Magnesium Supplements Review (Including Calcium, Boron, and Vitamins D & K)
Find Out What Magnesium Does, Who Needs It, and Our Top Picks Among Supplements
Clinical Update
4/22/2022
Cinnamon for Lowering Blood Sugar?
Does taking cinnamon powder or extract help control blood sugar levels in people with prediabetes or type 2 diabetes? See what the latest study, and earlier studies, have found in the Blood sugar, type 2 diabetes and prediabetes of our Cinnamon Supplements Review.
Also see: Which supplements and foods can help lower or control my blood sugar?
Clinical Update
7/29/2015
Magnesium Helps in Prediabetes
A recent study in people with prediabetes who were deficient in magnesium showed that a daily dose of magnesium significantly improved their glucose status. Details, along with our recent tests of magnesium supplements, are found in the Magnesium Supplements Review »
Clinical Update
8/04/2023
Berberine for Prediabetes?
Does taking berberine help lower blood sugar and cholesterol in people with prediabetes? Find out what a recent study showed the Berberine section of our Berberine and Goldenseal Supplements Review.
Also see: Which supplements and foods can help lower or control blood sugar?
Product Review
Turmeric and Curcumin Supplements and Spices Review
See Our Top Picks Among Turmeric Products
Product Review
NAD Booster Supplements Review (NAD+/NADH, Nicotinamide Riboside, and NMN)
How Important Is Boosting NAD+ Levels? Find Out and Learn How Booster Supplements Compare.
Product Review
Vitamin D Supplements Review (Including Calcium, Magnesium, Boron, and Vitamin K)
Find the Best Vitamin D Supplement with the Right Dose
Clinical Update
5/12/2021
Black Seed Oil for Blood Sugar Control?
Find out if black seed oil improved blood sugar control in people with prediabetes in our updated answer to the question: What are the health benefits of black cumin seed (black seed) oil?
Clinical Update
6/23/2023
Vitamin D & Diabetes Risk
In people with prediabetes, does taking vitamin D improve blood sugar regulation and decrease diabetes risk? Find out what a recent study showed in the Diabetes, insulin resistance and glucose control section of our Vitamin D Supplements Review.
Also see our Top Picks for vitamin D.
Clinical Update
8/26/2012
Curcumin May Help Prevent Diabetes
Past research has suggested a potential role for curcumin (from turmeric) in blood sugar control. A recently published placebo-controlled study of curcumin given daily to people with prediabetes (those with blood sugar levels somewhat higher than normal) produced dramatic results in reducing the percentage of such individuals progressing to diabetes. Get the details in the latest update to ConsumerLab.com's Turmeric and Curcumin Supplements Review -- which includes quality ratings of products and other potential uses of curcumin. More >>
Clinical Update
7/21/2020
Cinnamon for Prediabetes?
Does taking a daily cinnamon supplement help control blood sugar in people with pre-diabetes? See the results of a recent study in the What It Does section of the Cinnamon Supplements & Spices Review. Also see our Top Picks among cinnamon supplements and among cinnamon spices.
Product Review
Tuna, Salmon, Sardines & Herring Review (Canned and Packaged)
Recalls & Warnings
9/10/2021
FDA Warns Ten Sellers of "Diabetes" Supplements
On September 7, 2021, the FDA issued warning letters to 10 supplement companies that made drug claims by promoting products to treat diabetes and/or lower blood sugar. Five of the products were sold on Amazon as well as on company websites. The products were promoted with statements such as
CL Answer
Do any supplements naturally suppress appetite and help with weight loss?
Learn which natural ingredients can suppress appetite and find if these natural appetite suppressants help with weight loss.
CL Answer
What are the health benefits of black cumin seed (black seed) oil?
Find out if black seed oil has health benefits, such as lowering blood pressure or cholesterol, asthma, weight loss, and others. Dosage, forms, including black seed oil and black seed powder, safety information, using black seed oil in foods and more. ConsumerLab.com's answer explains.
CL Answer
Which supplements can help to lower blood pressure?
Supplements to lower blood pressure, including CoQ10, vitamin C, fish oil, and olive oil, are all explored to find out what works.
News Release
3/11/2022
Best Magnesium Supplements Identified by ConsumerLab
White Plains, New York, May 12, 2022 — Nearly half the U.S. population does not get adequate amounts of magnesium and can benefit from increasing magnesium intake from foods or supplementation.
News Release
1/05/2016
Cinnamon Spices and Supplements Found to Vary Widely in Levels of Potentially Helpful and Harmful Compounds Reports ConsumerLab.com
White Plains, New York, January 5, 2016 — Cinnamon supplements may be helpful for controlling blood sugar in people with type 2 diabetes or prediabetes, possibly due to compounds known as proanthocyanidins or PACs.
Recalls & Warnings
9/19/2018
Seller of Curcumin, Garcinia, Glucosamine and More Warned for Manufacturing Violations
On September 7, 2018, the FDA issued a warning letter to Best Nutrition Products, Inc.
