Resveratrol is the most recent of the OPC class of Grape Supplements. Pycnogneol was first, Grape Seed Extract 2nd, Resveratrol in the last 10 yrs or so. I don't know why Dr. Kruse suggests Resveratrol. Personally, I don't use Resveratrol, but a Costco grape seed ex I've used and still has some, contains 15mg of Resveratrol in the mix. I don't know much about Resveratrol as I've been hooked on Pycnogenol and Grape Seed Ex for so long with positive benefits.

If we re-read Dr. Kruse supplements for Nerve issues, it's not just Resveratrol. Maybe one can try to contact him to ask why Resveratrol and not grape seed ex or Pycnogenol. My thinking. Perhaps he knows that Resveratrol is best for nerve issues.