Resveratrol is the polyphenol behind much of the antioxidant interest in red grapes and berries, studied for its role in supporting cellular health and healthy aging.
It's the one ingredient in MetaboSwitch where we could make out a specific figure on the label image supplied — 12mg — though we'd encourage confirming this against your own bottle rather than relying on a photo.
It's included as the formula's dedicated antioxidant/cellular-health ingredient, distinct from the metabolism-focused ingredients around it.
Where it sits in the formula: one of eight ingredients named in MetaboSwitch's marketing graphics, alongside White Kidney Bean Extract, Green Tea Extract, Garcinia Cambogia, Chromium Picolinate.