It may be difficult to determine the exact time when your vitamin B12 injections have started working, as many people will report noticing a difference in their energy levels within a few days following the shot, and others may not feel the increase in energy for multiple weeks if their body needs the vitamin to build up a bit more
22(1):5374 The somatomedin hypothesis and insulin-like growth factor signaling in endocrine regulation Yakar S, Liu JL, Stannard B, Butler A, Accili D, Sauer B, Le Roith D., Journal of Clinical Investigation , 2001
Sleep: Aim for 79 hours
BODYWELLE also offers oral organ-specific peptides that target systems such as the nervous system, endocrine system, and adrenal glandsall of which influence sleep regulation
Theoretically, taking testosterone plus semaglutide could help cancel out some degree of that. Testosterone is a proven libido booster, but the science of semaglutide and sex is more complicated
Biological activities of fibroblast growth factors