In short, there isn’t an optimum resveratrol dosage per day and it’s likely to vary from person to person. Most research studies have used doses ranging from 150mg to 1000mg per day.

The objective of this study was to examine the metabolic effects of high-dose resveratrol in obese human subjects. In a randomized, placebo-controlled, double-blinded, and parallel-group design ...

2). Both placebo and resveratrol tablets were generally well tolerated (Supplementary Table 2). The compliance rates, based on pill count, were 89.2 ± 2.9% and 88.9 ± 3.3% in the placebo and ...