I inject 1cc a week of testosterone Cyp. When I take this supplement, I can reduce this my injection of test from once a week to every two weeks getting the same result in the gym and bedroom. GREAT PRODUCT! I even think the vitamins help my mood and overall feel good health after a week of dosage. It says to take 3. I can only handle 2 a day or my ADHD will be off the chart with energy. Im a 44 year old dirty white boy from BAMA!