Resveratrol - Natural Antioxidant and Essential Nutrient

Resveratrol is a polyphenol, a natural antioxidant that protects cells against dangerous, naturally occurring substances known as free radicals. Resveratrol decreases the `stickiness’ of blood platelets and helps blood vessels remain open and flexible. Since it is not an essential nutrient, Resveratrol is not associated with a deficiency state.

I have never heard of it before. How did you hear of it? Why are you sharing this information? Have you tried it, and been happy with the results? Does it help in breast cancer treatment? Is it a prescription that your doctor can give you, or is it manufactured and sold by a company? How long has it been used? Any possible side effects? Does it work with (or can it interfere) with cancer treatments? Is it covered by most insurance?
Thanks for sharing - more information, please.