I'm on my 3rd week with 1 androsterone. I gained 6 pounds in 2 weeks. Probably could have gained more if I hadn't gotten the flu. For the first 3 days I couldn't sleep, but I wasn't tired. When I go to the gym I feel like I could lift forever. This is my first PH cycle, so I've got to say for me being a hard gainer, definitely a good product!!!