Gave them a shot for the hell of it. Was using Serostim exclusively, then tried the greys, and instant water retention. A lot of water retention, feet, ankles, a lot of numbness at night. So not sure what is in these besides GH, but something that causes water retention. Switched back to Serostim and water gone, veins back, slight numbness, hands get tight with Serostim, but they aren't swelled up like with the greys. Pharm GH doesn't cause water retention like this no matter what you eat. Always felt sort of flushed on Greys as well. So never again will I bother with generics. Serostim or another Rx GH from now on. Just never know what is in these generics.