Is resveratrol a salvestrol?

Yes, but it is not possible to dose it effectively. Although resveratrol is a good antioxidant, its effective dosage range as a salvestrol is very narrow. At higher concentrations, it is an inhibitor of CYP1B1. It is not possible to determine the dose at which the inhibition starts but we know that it is very low. Given this, it should be avoided while taking salvestrols.