Compound atlas
Growth

HGH (Somatropin)

Also known as · 191AA · Somatropin · rHGH

HormonePrescription drug
Half-life
4h
approx. mean t½
Dose range
1–4 IU / day
typical, not prescriptive
Category
Growth
primary use-case
Single-dose decay
t½ = 4h · first-order model
~16h
to clear
1× t½
50%
remaining
2× t½
25%
remaining
~4× t½
6%
remaining
0%25%50%75%100%0m4h8h12h16h20h

How a single dose clears, assuming first-order elimination. The half-life is the biggest driver of how often you dose — start a cycle to see your own cumulative concentration curve.

Overview

Recombinant human growth hormone (191 amino acids). Prescription hormone used for deficiency; widely discussed for body composition and recovery.

Mechanism of action

Binds GH receptors and raises hepatic IGF-1, driving lipolysis, protein synthesis, and tissue growth.

Typical protocol

1–4 IU subQ daily (≈0.33–1.33 mg; 1 mg ≈ 3 IU). Medical supervision strongly advised.

Storage

Refrigerated 2–8°C; reconstituted stable ~2–3 weeks cold.

Disclaimer

This page summarizes publicly available information. None of it constitutes medical advice, prescription, or recommendation to acquire, possess, or use any compound. Many peptides described are research chemicals not approved for human use in the EU. Consult a licensed physician.