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Peptide Therapy GuideClear peptide education

Understand the source comparison

New Year Peptide Plan Reset Protocol January: Peptide Class Comparison

Before implementing any reset protocol, understand how washout requirements and reintroduction strategies differ across compound classes. GH Secretagogues (Ghrelin Mimetics) MK 677, GHRP-2, Hexarelin 14–21 60% of maintenance dose GHSR-1a upregulation measurabl

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This page preserves a source comparison for education. It does not add a rating, recommendation or clinical judgment.

  • Before implementing any reset protocol, understand how washout requirements and reintroduction strategies differ across compound classes.
  • GH Secretagogues (Ghrelin Mimetics)
  • MK 677, GHRP-2, Hexarelin
  • 14–21
  • 60% of maintenance dose
  • GHSR-1a upregulation measurable at 14 days, optimal at 21
  • Fastest receptor recovery. Can run shorter resets if necessary
  • GHRH Analogs
  • CJC-1295, Modified GRF(1-29)
  • 21–28
  • 70% of maintenance dose
  • GHRH receptor recovery slower. Requires 21+ days for baseline restoration
  • Longer washout critical. Skipping full reset reduces next cycle efficacy by 30%+
  • Melanocortin Agonists
  • Melanotan-II, PT-141
  • 18–24
  • 50% of maintenance dose
  • MC4R desensitization reverses within 18–21 days; MC1R faster (14 days)
  • Lower reintroduction dose prevents rapid tachyphylaxis during receptor stabilization phase
  • Thymic Peptides
  • Thymalin, Thymosin Alpha-1
  • 28–42
  • 80% of maintenance dose
  • Immunomodulatory effects persist post-cessation. Receptor dynamics less characterized
  • Longer washout recommended due to cascading immune signaling effects that outlast compound clearance
  • Nootropic Peptides
  • Cerebrolysin, Dihexa, P21
  • Neuroplastic effects demonstrate long half-lives. Receptor normalization requires 3–4 weeks
  • Cognitive effects may persist during washout; this isn't receptor presence but downstream pathway changes
  • Metabolic Modulators
  • Tesofensine, AOD-9604
  • Monoamine transporter regulation normalizes rapidly. 14–18 days sufficient
  • January's elevated baseline thermogenesis allows lower reintroduction doses without efficacy loss