Overview

Name: Resveratrol Product Comparisons

Description: What to look for on the label

Creator: Arrowsmith

This casebook is published and has been read 682 times.

The author of this casebook has identified the following medical topics as being highly relevant to this casebook.

• Cardiovascular Diseases -- Pathological conditions involving the CARDIOVASCULAR SYSTEM including the HEART; the BLOOD VESSELS; or the PERICARDIUM.
  
  

Notes

During late October, 2009, various brands of resveratrol products were purchased at stores in the Boston area including Whole Foods, Vitamin Shoppe and GNC. We found most labels difficult to read because they were usually in very small print. So we've copied this information from the containers and reproduced it here.

Also provided are links to further sources of information about the plants in which reseveratrol is abundantly found and which are listed as ingredients on many of these non-prescription resveratrol products.

Lastely, we provide a link to another CaseBook entitled "Resveratrol Clinical Research Trials."

In our non-exhaustive sampling of reseveratrol-containg products, we observed three categories of products.

1. Products containing non-purified extracts of various natural sources of resveratrol (plants). This was the most abundant category of resveratrol products.
2. Products containing purified resveratol but no other active ingredients.
3. Products containing mixtues of plant extracts (as in category 1, above) with other substrances, such as vitamin C, which are implied to have "synergistic" effects when taken together with reservartrol

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Category 1

The predominant sources of resveratrol in these products are Japanese knotweed (scientific name: Polygonum capsidatum or red wind grapes (scientific name: Vitis vinifera). Most of these products come as clear gelatin capsules containing a green or brown powdery substance which appears to be finely ground plant material. Below are the brands we looked at. The "serving size" (dose) usually indicated the amount in milligrams (mg) of what's in the capsule, not necessary equal to the amount of resveratrol in the capsule.

1. Natural Resveratrol from Now Foods "Cardiovascular support." Serving size: 1 capsule. Ingredients: Polygonum cuspidatum (root) - 400 mg, Vitis vinifera - 10 mg
2. Resveratrol from SolaRay. Serving size: 1 capsule. Ingredients: Polygonum cuspidatum (root/rhizome) - 75 mg, Grape skin extract - 100 mg, Vitis vinifera (skin) - 50 mg, Red wine extract - 25 mg
3. Resveratrol from ReserveAge Organics "from the heart of France." Serving size: 1 capsule. Ingredients: Polygonum cuspidatum + Vitis vinifera - 900 mg
4. Resveratrol from Nature's Way "Synergistic formula." Serving size: 2 capsules. Ingredients: Red wine extract - 200 mg, Red wine powder - 200 mg, Japanese knotweed - 150 mg, Grape seed extract - 100 mg.
5. Resveratrol forte from Enzymatic Therapy "Anti-Aging Antioxidant." Serving size: 2 capsules. Ingredients: "Longevity Blend(tm)" French whole wine grape and giant knotweed - 650 mg, Sophora japonica (flower bud) extract - 150 mg.
6. Resveratrol MAX from VSI, Inc. "Helps promote healthy aging." Serving size: 1 capsule. Ingredients: Polygonum cuspidatum (root) - 250 mg, Vitis rotundifolia - 50 mg.
7. Resveratrol Plus from Country Life "Helps maintain the structural integrity of capillaries and connective tissue." Serving size: 1 capsule. Ingredients: Polygonum cuspidatum extract (root) - 100 mg, Grape seed extract - 50 mg, Grape skin extract - 25 mg, Pine bark extract - 25 mg.
   
8. Wild Crafted Resveratrol from Genceutic Naturals "Advanced Bio-Active Plant Compound." Serving size: 1 capsule. Ingredients: Muscadine grape - 100 mg.

Category 2

1. Resveratrol from TruNature resVida(tm) "Promotes a healthy heart." Serving size: 1 softgel. Ingredients: "Not a plant extract" (the softgel, when cut open contains an oily substance assumed to be resveratrol dissolved in suflower oil)
   

Category 3

1. Resveratrol 100 from Jarrow Formulas "Cardiovascular protection." Serving size 1 capsule. Ingredients: Vitamin C - 100 mg, Polygonum cuspidatum + Tiger cane root - 100 mg.
2. Resveratrol Synergy from Jarrow Formulas "Promotes cardiovascular function & healthy aging." Serving size: 1 tablet. Ingredients: Vitamin C - 100 mg, Polygonum cuspidatum + Tiger cane root - 200 mg, Vitis vinifera (seed) - 50 mg, Ancellotta lambrusco (skin) - 100 mg,  Camellia sinensis (green tea leaf) - 200 mg
   

 

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