Solgar - Resveratrol 500 mg. - 30 Vegetarian Capsules: Free radicals can lead to the premature aging of cells. These proteins were shown to improve quality of Solgar - Resveratrol 500 mg. Each vegetable capsule of Solgar's Resveratrol offers 500 mg of natural trans-Resveratrol from Polygonum cuspidatum. Solgar Resveratrol is free of gluten, wheat and dairy. Resveratrol, a polyphenol, was first isolated in grape skins.