I know guys that have tried the 400 and they all told me to do only 1cc of the 400 with 2 cc of something like EQ ,Laurabolin,something low mg because of the alchohol content of the 400 will make you sore as hell and lump up. I saw a guys ass cheek he shot 3cc at once the first time he used it thought he would get a nice dose of test with 1 shot all he got was a lump on his ass the size of a softball and he couldnt walk for about a week he was popping 600 mg motrin like pez to ease the pain.