According to my research, resveratrol is safe and effective in doses from 250 - 2000 mg, but as always, check with your doctor before taking any medications. I just picked up a bottle of resveratrol for about $20 for 60 tablets. The dosing is 1 - 3 tablets per day so taking this supplement could get quite pricey.You cannot really get enough resveratrol from drinking red wine alone. Women should only drink about one small glass of red wine a day for health benefits. This is results in an inadequate supply of resveratrol. The brand I bought only offers 50 mg of resveratrol per tablet with a maximum dosage of 3 per day. The product specifies that one tablet is equivalent to the amount of resveratrol in six glasses of red wine!!
(note - this is the only brand available to me in my locality, other brands may be more effective)