Been there, done that. The RAD 140 market is a minefield — tons of underdosed garbage floating around. I went through three different suppliers in the last year, two of which gave me bunk product that did absolutely nothing, and the third one gave me some nasty side effects that made me question whether it was even RAD 140 at all. What finally helped was this resource I found recently: https://brentanofabrics.com/art/where_to_find_rad_140_for_sale_a_comprehensive_guide.html. Don’t be fooled by the domain — weird name, I know, but the article is legit and lays out how to identify real vendors, what red flags to avoid (like unrealistically low prices or lack of COAs), and even touches on vendor reviews. I cross-checked a couple of their recommendations, and the first one I tried actually delivered clean results — noticeable strength gains in week 2 and zero sides. Worth a read before making a move.