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Kisspeptin vs Oxytocin

Updated 9 sources

Key differences

  1. 1Kisspeptin works upstream on the reproductive hormone axis through the KISS1R receptor; oxytocin acts on social and emotional behavior at whatever hormone levels you already have.
  2. 2Both are short-lived in the blood, measured in minutes: about 4 minutes for kisspeptin-10, per one guide.

Side by side

Facts from each record, in the same words as their own pages.
Kisspeptin and Oxytocin side by side
KisspeptinOxytocin
Category
  • Sexual health, Other
  • Sexual health, Cognitive
Evidence
  • Limited human data
  • Some human trials
FDA status
  • FDA 503A Category 2Regulatory
  • FDA approved as Pitocin +1Regulatory
WADA
  • Prohibited
  • Not prohibited
Half-life
  • About 4 minutes in human plasma (kisspeptin-10)Clinical study
  • 27.6 minutes for kisspeptin-54, the longer form used in fertility trialsClinical study
  • Under 1 minute in rats after an IV dose (kisspeptin-10)Regulatory
  • About 1 to 6 minutes in the blood, shorter in late pregnancy and during breastfeeding.Regulatory
Routes
  • Subcutaneous injection, Intravenous (IV)
  • Intramuscular injection, Nasal, Sublingual, Subcutaneous injection
Forms
  • Vial (powder), Ready-to-use vial, Other form
  • Ready-to-use vial, Nasal spray, Vial (powder), Other form
Reported doses
  • 50 to 200 mcg (subcutaneous injection)
  • 0.01 to 3 mcg/kg (intravenous (iv))
  • 1.5 to 4 mcg/kg/hour (intravenous (iv))
  • 10 IU (intramuscular injection)
  • 10 to 40 IU (nasal)
  • 10 to 40 IU (sublingual)
Most cited frequency
  • Once daily
  • One IM injection after the placenta is delivered
Vial sizes
  • 10 mgCompetitor guide
  • 2 mg, 5 mg, 10 mgCompetitor guide
Mixed vial keeps
  • Keep the mixed vial at 2 to 8 C and do not freeze it.Competitor guide
  • Keep a mixed vial in the fridge at 2 to 8°C and use it within 28 days.Competitor guide
Protocols on file
  • 10
  • 13

Doses shown are what sources report, labelled by origin. Not medical advice.

Read each in full

Sources

9 sources, each checked by date. Record updated Oct 24, 2026. Numbers are restated in our own words and labelled by where they came from.

Clinical study2

  1. Direct comparison of intravenous kisspeptin-10, kisspeptin-54 and GnRH on gonadotrophin secretion in healthy men (Hum Reprod 2015)PubMed Central · checked Oct 24, 2026
  2. Kisspeptin protocolpeptidedosingprotocols.com, via a competitor guide · checked Oct 24, 2026

Competitor guide1

  1. Oxytocin: Dosingbodyhackguide.co · checked Oct 24, 2026