The selectivity data (13x more selective than GHRP-6) is from published research
If you plan to become pregnant, stop this medication at least 2 months before trying
Moreover, few studies have investigated off-target activation in normal tissues where GSH levels may still be substantial (e.g., liver, kidney)
Those pieces include the products legal status, concentration, source, formulation, medical indication, side-effect history, and whether the combination is being studied or prescribed under a recognized framework
Based on these factors, here is a brief comparison between the two routes of administration: Bioavailability: Overall, researchers should expect significantly higher bioavailability with PT-141 injections compared to PT-141 nasal spray