I've bought these https://asquarednutrition.com/products/ ... esveratrol and what you say puts their claim in an interesting light:drkris69 wrote: ↑Mon Apr 27, 2020 8:38 amThe main difference between resveratrol and trans resveratrol is that the resveratrol is the general product name of a dietary supplement containing polyphenols, which act as antioxidants, whereas trans-resveratrol is the active ingredient found in the resveratrol supplement. So make sure that the product contains 99% trans resveratrol. Usually the darker the color of the powder the less of the active ingredient.
"IMPORTANT PRODUCT INFORMATION: Resveratrol powder ranges in color from light brown to a dark brown/chocolate color. We are standardizing our formula to primarily use the dark brown colored raw material moving forward. Also, we have updated our capsules to be clear instead of white in appearance. We have made these updates in efforts to create a Vegan friendly Resveratrol formula. Rest assured, the potency and effectiveness of our Resveratrol product has not changed."
Their customer support was quick and could inform me: "Our Resveratrol supplement yields a 50% trans-resveratrol ratio." So I also need to find a new brand.