PT-141 Bremelanotide has a unique window of opportunity. Injecting pt141 subq...effect generally takes 2-4 hours to set in, approaching peak around 8hr mark (give or take some) - side effects of pt 141 dosage can make users flush and feel nauseated early on...should not last long (may come in waves..) - larger pt141 doses may benefit from smaller peptide injections (ie.: 100-250mcg)*