HCG (Human Chorionic Gonadotropin) vs Melanotan II

A side-by-side comparison from PeptideSciences101, the open peptide reference.

Overview

HCG (Human Chorionic Gonadotropin) and Melanotan II are both hormonal peptides, but they differ in mechanism, dosing, and regulatory status.

This page compares HCG (Human Chorionic Gonadotropin) and Melanotan II across their primary use, typical dosing, reported benefits and side effects, and U.S. regulatory status. For the full monograph on either compound — mechanism of action, clinical research, and references — follow the article links.

Side-by-side comparison

HCG (Human Chorionic Gonadotropin)Melanotan II
CategoryHormonalHormonal
Regulatory status (US)Research use onlyCompounding (Rx) — Apr 2026
Typical dosage250-500 IU250-500 mcg
Frequencymultiple weeklyas needed
Reported benefitsTestosterone support, fertility, testicular healthTanning, libido enhancement, appetite suppression
Reported side effectsPossible estrogen increase, injection site reactionsNausea, flushing, mole darkening

Key differences

Primary use. HCG (Human Chorionic Gonadotropin) is categorised under Hormonal, while Melanotan II falls under Hormonal. Because they target a similar goal, they are common alternatives to weigh against each other.

Regulatory status. HCG (Human Chorionic Gonadotropin): not FDA-approved; treated as a research compound. Melanotan II: not FDA-approved; compounding permitted with a prescription as of April 2026.

Dosing. HCG (Human Chorionic Gonadotropin) is typically dosed at 250-500 IU (multiple weekly). Melanotan II is typically dosed at 250-500 mcg (as needed).

Can you stack them?

Some protocols combine peptides, but stacking HCG (Human Chorionic Gonadotropin) and Melanotan II has not been validated for safety or efficacy in controlled trials. Combining compounds can change their effects and risks. Nothing here is medical advice — consult a qualified healthcare provider before starting or combining any protocol.

Frequently asked questions

What is the difference between HCG (Human Chorionic Gonadotropin) and Melanotan II?
HCG (Human Chorionic Gonadotropin) and Melanotan II are both hormonal peptides, but they differ in mechanism, dosing, and regulatory status. HCG (Human Chorionic Gonadotropin) is not FDA-approved; generally classified as a research compound, whereas Melanotan II is not FDA-approved; compounding permitted with a prescription (as of April 2026).
What is HCG (Human Chorionic Gonadotropin) used for?
Testosterone production support.
What is Melanotan II used for?
Melanocortin system activator.
Can you take HCG (Human Chorionic Gonadotropin) and Melanotan II together?
Some users combine peptides within a single protocol, but stacking HCG (Human Chorionic Gonadotropin) and Melanotan II has not been established as safe or effective in controlled trials. Neither this comparison nor PeptideSciences101 is medical advice — consult a qualified healthcare provider before combining any compounds.
Is HCG (Human Chorionic Gonadotropin) or Melanotan II FDA-approved?
HCG (Human Chorionic Gonadotropin) is not FDA-approved; generally classified as a research compound. Melanotan II is not FDA-approved; compounding permitted with a prescription (as of April 2026).

Read the full articles

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