Peptide Academy · Sexual Health

Kisspeptin

Also known as KISS1 peptide / Metastin

Educational research summary, not medical advice. Many compounds here are not approved for human use. Talk to a licensed clinician before making any health decision.

The Peptide Academy is free to read. Members also get the research protocols for Kisspeptin, dose and vial tracking, and an AI Advisor with cited sources. Try it all free for 7 days, no card needed.

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What is Kisspeptin?

The master upstream regulator of the reproductive hormone axis, studied for fertility and libido.

How it works

Activates KISS1R on hypothalamic GnRH neurons, triggering the entire LH/FSH reproductive cascade.

Published research

  • Human studies show robust LH/FSH release; trials in IVF triggering and hypoactive sexual desire

Half-life

Short — minutes

Cautions

Investigational; tachyphylaxis occurs with continuous exposure.

Side effects & fixes

Common side effects

  • —Hot flashes or flushing
  • —Headache
  • —Mood changes
  • —Injection-site reactions

Histamine reactions

Flushing is common; site itching occasionally.

Common fixes

  • These are prescriber-managed — report side effects to your clinician, who may adjust the schedule.
  • Rotate injection sites (abdomen, thighs, upper arms) and stay at least an inch from the last spot.

Stop and get help

  • Severe headache, vision changes, or severe abdominal or pelvic pain.
  • Stop and get emergency help for swelling of the face, lips, tongue or throat, trouble breathing, widespread hives, chest pain or fainting.

Basis: Prescribing information. Educational only, not medical advice.

Medication concerns

Theoretical: no human interaction studies
  • Hormone treatments (testosterone, estrogen, GnRH drugs, fertility medicines)

    Kisspeptin works through the same reproductive hormone axis; effects can overlap or cancel out.

  • Hormone lab tests

    LH, FSH and sex hormone results can shift around doses.

  • Everything else you take, including supplements

    Bring a full list of medicines and supplements to your pharmacist or clinician before starting.

Basis: No interaction studies; concerns follow from its action on the GnRH axis. Educational only, not medical advice. Never stop or change a prescribed medicine without your prescriber.

Protocols & tracking are members-only

Members see the research protocols for Kisspeptin, plan schedules, track every dose and vial, and ask the AI Advisor questions with cited sources. Try every Researcher feature free for 7 days, no card needed.

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