A word about dietary supplements
Whether you choose to take the supplement form of resveratrol or anything else, keep in mind that the FDA does not approve dietary supplements the way it approves medications.
For example, drug manufacturers must provide evidence that a drug is safe and effective before the FDA will allow it to be sold. The FDA also monitors whether drug manufacturing processes are adequate. However, with dietary supplements, the FDA does not have to certify that they are safe or effective. In fact, the FDA must prove a product is harmful before it is allowed to remove it from the market, and the FDA does not monitor the manufacturing of supplements.