the Stakeholder Panel on Dietary Supplements

Resveratrol in Dietary Supplements • 187 Dietary supplements containing resveratrol are listed in the NIH Office of Dietary Supplements labels database • Most of these products contain synthetic resveratrol, others cite resveratrol extracted from Polygonum cuspidatum or, less frequently, red wine. • Some supplement labels list trans- resveratrol, some list resveratrol-3-glucoside, but most list only resveratrol. • Range of resveratrol in supplements, 37.5–500 mg/dose. • Dosage forms include capsules, tablets and liquids.

Analytical Objectives ▪ Quantitatively extract resveratrol from finished products including capsules, tablets and pills and liquids. ▪ Measure both trans- resveratrol and cis- resveratrol