Peptide Knowledge Base · Sexual Health

Kisspeptin: what it is, what the evidence says, and its real status

An upstream reproductive-hormone peptide with intriguing early human work on desire and fertility.

Can you actually get it?

Plain-English verdict: Education only.

Regulatory status: Category 2 (interim 503A policy) · may present significant safety risks.

How does Kisspeptin work?

A neuropeptide that stimulates GnRH release, sitting at the top of the reproductive hormone cascade.

What it does — and what it does not do

What it does: Studied for libido, arousal, and fertility-related signaling.

What it does not do: It is not a proven libido treatment, and it is not offered here.

How honest is the evidence?

Evidence grade C — Mixed / early human evidence.

early but real human studies on the reproductive axis

A grade measures how much human evidence exists, not whether a molecule is good, safe, or worth your interest. Read our grading methodology for what each grade means.

What we still don't know: Optimal dosing and durability of effects on desire are not established.

WADA status: Not prohibited.

Who should not take it

Not characterized for routine use; reproductive-hormone effects warrant clinician oversight.

Sources

Kisspeptin reproductive-axis and sexual-desire studies (Dhillo et al.)

Compounded medications are not FDA-approved. We keep two signals separate and never collapse them: whether you can get something, and what the rule currently says. See the live FDA Peptide Tracker for status.

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Last reviewed Jun 16, 2026 · Peptós.LIFE · Not medical advice.