On a forum 29 people have reported any side effects they experienced while taking resveratrol. Consider those statements were made by real people not scientists. They can be as accurate/inaccurate as you want them to be.

Health Benefits:
improved energy/endurance: 13
improved mood: 10
decreased appetite/weight loss: 5
improved hair growth: 5 maybe’s
decreased Osteo Arthritis (OA): 3
decreased coffee: 2
decreased non-OA pains: 1
require less sleep: 1
increased sex drive: 1

Bad Effects / Problems:
increased tendinitis: 6
increased non arthritis, non tendinitis pains: 2
increased obsessive: 2
increased RA arthritis: 1
increased aggression: 1
increased jittery: 2 at beginning (supposedly only on 50%)
laxative: 2 at beginning (supposedly only on 50%)

Do you take resveratrol? Please contribute by posting your side effects below (use the comment form).