I'm a 31-year-old guy weighing 170lbs. For the past two months, I've been using Opti black tops and feeling really good on 2 ius. No side effects so far. Planning to up it to 4iu next month. The gym sessions are fantastic, and I'm getting leaner while looking fuller. Almost feels like a mild cutting cycle with orals. Excited to see what changes 6 months on this will bring!