Testosterone
Kisspeptin stimulates HPG axis upstream. HCG mimics LH directly. Gonadorelin for natural restart.
Erectile function
PT-141 acts centrally (off-label in men). Complements PDE5 inhibitors.
Body composition
CJC-1295/Ipamorelin for fat reduction and lean mass. Tesamorelin for visceral adiposity.
Peptides instead of TRT?
Different mechanisms; kisspeptin needs intact axis.