What is the difference between Alpha-MSH and Gonadorelin?

Alpha-MSH: Melanocortin peptide; activates MC1R (pigmentation/anti-inflammatory), MC3R (energy balance), MC4R (appetite); suppresses NF-κB and pro-inflammatory cytokines Gonadorelin: Synthetic GnRH that binds pituitary GnRH receptors; pulsatile dosing stimulates LH/FSH release; used to maintain HPG axis during TRT

Is Alpha-MSH FDA approved?

Alpha-MSH is not evaluated or approved by the FDA. It is discussed for research and educational purposes only, not as medical guidance.

Is Gonadorelin FDA approved?

Gonadorelin is not evaluated or approved by the FDA. It is discussed for research and educational purposes only, not as medical guidance.

How is Alpha-MSH administered in research settings?

In research settings, Alpha-MSH is typically administered via the subcutaneous or intranasal routes. PeptideBase does not provide dosing or administration instructions.

How is Gonadorelin administered in research settings?

In research settings, Gonadorelin is typically administered via the subcutaneous or intravenous routes. PeptideBase does not provide dosing or administration instructions.

Home›Research›Compare›Alpha-MSH vs Gonadorelin

Peptide Comparison

Alpha-MSH vs Gonadorelin

Both are Reproductive & Hormonal peptides.

Alpha-MSH

Alpha-Melanocyte Stimulating Hormone

RecoveryNot EvaluatedResearch Only

Half-life: ~3-5 minutes (plasma)

No providers listed yet

Full Alpha-MSH profile →

Gonadorelin

GnRH

Sexual HealthNot EvaluatedCompoundable

Half-life: ~2-4 minutes

26 providers listed

Full Gonadorelin profile →

Bottom line

Gonadorelin carries stronger published evidence (Meta-analysis, 3 key studies) than Alpha-MSH (Review, 12); both are research compounds.

Quick Verdict

Alpha-MSH

Half-life

~3-5 minutes (plasma)

Gonadorelin

Half-life

~2-4 minutes

Which One Should You Choose?

Your goal	Better option
Stronger clinical evidence	Gonadorelin
More provider options (0 vs 26)	Gonadorelin

Research summary only — not medical advice. Consult a qualified provider before making any decisions.

Side-by-Side Comparison

Alpha-MSH

Gonadorelin

Mechanism Family

Reproductive & Hormonal

Half-life

~3-5 minutes (plasma)

~2-4 minutes

FDA Status

not evaluated

Admin Routes

subcutaneous, intranasal

subcutaneous, intravenous

Availability

Research Only

Compoundable

Providers

None listed

26 listed

Avail. Notes

Endogenous 13-aa neuropeptide. No FDA-approved drug. Bremelanotide (PT-141/Vyleesi) is an approved derivative but a distinct compound. Not on FDA 503A bulks list. Research use only.

Previously FDA-approved as Factrel (NDA 017019). Voluntarily discontinued by manufacturer. Included on the FDA 503B outsourcing-facility bulk-substances list (Category 1), not the 503A pharmacy list. Prescription compounded product.

Research Evidence

Alpha-MSH

Review · 12 key studies · most recent 2026

Gonadorelin

Meta-analysis · 3 key studies · most recent 2026

Research Citations

Alpha-MSH

Animal2026 · Appl Radiat Isot

Preclinical assessment of (177)Lu-DOTA-Pip-Nle-CycMSH(hex): In vivo evaluation and human dosimetry estimation.

Animal2026 · Sci Rep

Antrodia cinnamomea extract exhibits anti-melanogenic and anti-photoaging effects: potential for cosmetic and…

Animal2026 · Chem Biodivers

Depigmenting Effects of Vitex rotundifolia Cone Essential Oil in Melanocytes and Its Chemical Composition.

Animal2026 · Sci Rep

Hypothalamic orexigenic and anorexigenic neuropeptides in the rotenone model of Parkinson's disease.

+8 more

Gonadorelin

Meta-analysis2018 · Fertility and Sterility

Efficacy and safety of pulsatile gonadotropin-releasing hormone therapy among patients with idiopathic and fu…

Animal2026 · J Reprod Dev

Effect of post-insemination GnRH analogue administration on pregnancy rates in repeat-breeder cows: compariso…

Animal2026 · J Dairy Sci

Increasing gonadorelin hydrochloride dose at the first GnRH of breeding Ovsynch enhances luteinizing hormone…

About Alpha-MSH

Melanocortin peptide; activates MC1R (pigmentation/anti-inflammatory), MC3R (energy balance), MC4R (appetite); suppresses NF-κB and pro-inflammatory cytokines

Research Areas

anti-inflammatoryappetite suppressionthermoregulationskin pigmentation

About Gonadorelin

Synthetic GnRH that binds pituitary GnRH receptors; pulsatile dosing stimulates LH/FSH release; used to maintain HPG axis during TRT

Research Areas

pulsatile LH and FSH stimulation from the pituitarytesticular function and testosterone production maintenancefertility preservation alongside TRT (FSH pathway intact)hypothalamic-pituitary axis restoration in hypogonadism

Safety Profile

Information below reflects published research data only — not medical advice. Consult a qualified provider before use.

Alpha-MSH

Reported (Unverified — Pending Clinical Review)

melanoma historyuncontrolled hypertension

No established clinical contraindications

Gonadorelin

Reported (Unverified — Pending Clinical Review)

continuous high-dose (causes receptor downregulation)

No established clinical contraindications

Suggested Monitoring

Total testosteroneLHFSHEstradiol (E2)SHBGProlactin

Standard reproductive endocrinology panels establish HPG axis baseline. LH and FSH confirm pituitary response to gonadorelin; testosterone, E2, and SHBG reflect downstream gonadal output.

Find Providers

Where to source these peptides

Providers offering

Alpha-MSH

Browse directory →

Providers offering

Gonadorelin

26 listed

Browse directory →

PeptideBase lists providers for educational research purposes only. Always consult a qualified healthcare professional before obtaining or using any peptide.

More Reproductive & Hormonal Comparisons

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Educational research tools — not medical advice.