Understand the source comparison
Melatonin Combined With Other Peptides: Comparison of Major Classes
GH Secretagogues (GHRP-2, MK-677) Ghrelin receptor agonism → pulsatile GH release Administer GH secretagogue 90–120 min before melatonin Receptor competition in hypothalamus; melatonin blunts peak GH by 18–34% if co-administered Stagger dosing. GH pulse must p
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- GH Secretagogues (GHRP-2, MK-677)
- Ghrelin receptor agonism → pulsatile GH release
- Administer GH secretagogue 90–120 min before melatonin
- Receptor competition in hypothalamus; melatonin blunts peak GH by 18–34% if co-administered
- Stagger dosing. GH pulse must peak before melatonin saturates MT1 receptors
- Cognitive Peptides (Semax, Selank)
- BDNF upregulation, GABAergic modulation
- Cognitive peptide morning/afternoon, melatonin evening
- No receptor overlap, but opposing circadian effects (arousal vs sedation)
- Separate by 6+ hours to preserve each compound's circadian phase alignment
- Metabolic Peptides (MOTS-C)
- Mitochondrial gene expression, AMPK activation
- MOTS-C morning fasted state, melatonin evening
- Melatonin enhances mitochondrial antioxidant capacity. Potential synergy
- Compatible with 8+ hour separation; may enhance long-term metabolic adaptation
- Sleep Peptides (DSIP analogs)
- Delta sleep induction, cortisol modulation
- Combine with melatonin at sleep onset
- Additive sedative effect without receptor competition
- Synergistic when used together; reduce melatonin dose by 30–50% to avoid excessive morning grogginess