Source comparison
Best Kisspeptin Dosage for Libido: Route, Timing, and Duration Comparison
IV Bolus 1–2 nmol/kg 30–60 minutes 60–90 minutes Direct CNS delivery; limbic KISS1R activation Imperial College fMRI study. Increased posterior cingulate activity during sexual stimuli exposure Subcutaneous 10–50 mcg 90–180 minutes (peripheral only) 4–6 hours
This comparison does not assign a generated winner or score.
- IV Bolus
- 1–2 nmol/kg
- 30–60 minutes
- 60–90 minutes
- Direct CNS delivery; limbic KISS1R activation
- Imperial College fMRI study. Increased posterior cingulate activity during sexual stimuli exposure
- Subcutaneous
- 10–50 mcg
- 90–180 minutes (peripheral only)
- 4–6 hours
- Peripheral LH/testosterone elevation; limited CNS penetration
- Reproductive Biology study. LH elevation without subjective libido increase at ≤25 mcg
- Continuous IV Infusion
- 2–4 nmol/kg/hour
- Gradual onset over 2–4 hours
- Duration of infusion
- Sustained KISS1R occupancy; pulsatile LH secretion
- Pilot study (2021). Maintained LH pulsatility over 22.5 hours without acute peaks
- Intranasal (experimental)
- 1–2 mg total dose
- 15–30 minutes
- 45–90 minutes
- Bypasses blood-brain barrier via olfactory pathway
- Limited data; Phase 1 trials show CNS delivery without systemic LH surge
- Professional Assessment
- IV bolus at 1–2 nmol/kg remains the validated standard for acute libido research. Subcutaneous dosing drives gonadotropin response but does not replicate central effects unless scaled to ≥50 mcg, at which tolerability becomes limiting. Intranasal delivery shows early promise for CNS targeting without peripheral effects.