I just stopped taking it a few days ago when my diy kpv/ghkcu blend ran out. It's definitely legit. First time using it I felt improvement in my lower GI area. Not sure if related but same time my airway felt like it had gotten clearer, hard to explain. I'm sure kpv has some general beneficial effect on mucosa considering my experience with it
My wife also has some bad psoriasis arthritis has injections for them for years Ustekimap since she started BPC things started to improve , then the Reta , then the Klow she is now injection free for 9 months ( not peptide injection free obviously )