Peptide & GLP-1 Side Effects

What is actually reported, when it shows up, what counts as a red flag - and the biomarkers that catch problems before you feel them. Pick a compound.

GLP-1

Semaglutide side effects →

Nausea · Constipation or diarrhea · Reduced appetite / early fullness

Tirzepatide side effects →

Nausea · Diarrhea or constipation · Decreased appetite

Retatrutide side effects →

Nausea · Diarrhea · Vomiting

Growth

Tesamorelin side effects →

Injection-site reaction · Joint aches / fluid retention · Tingling or carpal-tunnel-like sensations

Ipamorelin side effects →

Flushing or warmth · Head-rush / lightheadedness · Water retention

CJC-1295 side effects →

Injection-site reaction · Flushing / head-rush · Water retention

Sermorelin side effects →

Injection-site reaction · Flushing · Vivid dreams / sleep changes

MK-677 side effects →

Increased appetite · Water retention · Lethargy / grogginess

HGH side effects →

Fluid retention / edema · Joint and muscle aches · Carpal tunnel syndrome

Healing

BPC-157 side effects →

Injection-site irritation · Fatigue or lightheadedness · Nausea

TB-500 side effects →

Fatigue / lethargy · Head-rush or lightheadedness · Injection-site reaction

Sexual Health

PT-141 side effects →

Nausea · Flushing · Headache

Anti-Aging

Epithalon side effects →

Injection-site reaction · Drowsiness · Headache

MOTS-c side effects →

Injection-site reaction · Fatigue or flushing · Mild GI upset

Immune

Thymosin Alpha-1 side effects →

Injection-site reaction · Transient fatigue · Mild flu-like feeling

Cosmetic

GHK-Cu side effects →

Injection-site reaction · Skin irritation (topical) · Temporary skin tightness or flaking

Educational only - not medical advice. Side-effect information reflects published literature and community reports and does not predict individual outcomes. Always consult your licensed healthcare provider before starting, stopping, or changing any compound. MyProtocolStack does not diagnose, treat, cure, or prevent any condition.