Peptide Profiles

Education-first profiles for the peptides and GLP-1s most commonly used in optimization protocols. Each profile covers mechanism, dosing patterns, and the biomarkers you should be tracking — in context of what your protocol is actually doing.

HEALING

BPC-157

Body Protection Compound-157

Synthetic 15-amino-acid peptide derived from human gastric juice, studied for tissue repair and gut healing.

30–60 minutes (systemic), with extended local tissue half-life

GROWTH

Tesamorelin

Tesamorelin (Egrifta)

FDA-approved GHRH analog with the strongest IGF-1 response of any peptide in its class.

~26 minutes

MK-677

MK-677 (Ibutamoren)

Oral, once-daily growth hormone secretagogue. Technically a small molecule, not a peptide — but lumped into the category for protocol purposes.

~24 hours

GLP-1

Semaglutide

Semaglutide (Ozempic / Wegovy)

FDA-approved GLP-1 receptor agonist with the largest clinical evidence base for weight and glycemic outcomes.

~7 days

Tirzepatide

Tirzepatide (Mounjaro / Zepbound)

FDA-approved dual GIP/GLP-1 receptor agonist with superior weight loss efficacy vs semaglutide in head-to-head data.

~5 days

Retatrutide

Retatrutide (LY-3437943)

Investigational triple agonist (GLP-1 / GIP / glucagon) with the largest weight-loss effect of any compound yet reported in its class.

~6 days

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Informational only — not medical advice. MyProtocolStack is a tracking and education platform. Work with a licensed provider before starting, changing, or stopping any protocol.