Scheduling, administration, biomarkers, and practical guidance.
Mandatory washout to prevent receptor tolerance and maintain pituitary responsiveness
FDA-approved cycle length; extended use may require IGF-1 monitoring
Synergistic stack; cycling prevents receptor desensitization
Fasted — no caloric intake 30 min before or after
Insulin must be at nadir for beta-3 adrenergic receptor activation in adipose tissue
Before sleep, 2+ hours after last meal
Aligns with natural nocturnal GH pulse; food-induced insulin suppresses GH release
Consistent daily timing
FDA-approved for daily administration; morning aligns with physiological GH rhythms