I did actually, a couple months ago I switched over to Natural Factors.Sorry for the late answer. You need to ask @Heinrich_S7
I started taking Webber Naturals Reservatrol 200/25 mg with Grape seed, but I found that they only have 20% ie 40mg of trans-reservatrol in them (so I switched to 2*100 mg MRM pure Trans-Reservatrol) @Heinrich_S7 are you aware of this?
https://www.amazon.ca/gp/aw/d/B0037Z4Q8M?psc=1&ref=ppx_pop_mob_b_asin_image
It's a Canadian brand, I'm unsure if it's available outside my home country. It has 250 Trans Resveratrol. Like Webber's, it's derived from Japanese Knotweed.