#1
PT-141
Melanocortin receptor agonist — the only FDA-approved peptide for sexual arousal, marketed as Vyleesi.
~2 hoursSubcutaneous
Best Peptides · sexual health
Best Peptides for Sexual Health
Sexual-health peptides are the smallest research-backed category on the platform but also one of the most commonly searched. PT-141 (bremelanotide) is FDA-approved for HSDD in women and widely used off-label in men; kisspeptin-10 stimulates the HPG axis upstream of LH and testosterone; oxytocin (intranasal) has the largest base of social-bonding and arousal research. The shared discipline is pairing the protocol with the hormone panel that reveals whether the upstream signal is moving — testosterone, free T, SHBG, LH, FSH for the men; estradiol, prolactin, DHEA-S for women. Without that lab pairing, "I felt different" is unfalsifiable, and dialing in dose becomes a guess.
Editorial angle: Sexual-health peptide listicles avoid the lab-tracking layer; this one centers the hormone panel that reveals whether the protocol is actually changing the upstream signal.
3 peptides commonly tracked for sexual health
#2
Kisspeptin-10
Educational profile + dose calculator on MyProtocolStack.
#3
Oxytocin
Educational profile + dose calculator on MyProtocolStack.
What to Track on a Sexual-Health Protocol
Logging the protocol without the right biomarkers is half the picture. The labs below are the ones MyProtocolStack tracks alongside any sexual health protocol — establish a baseline, re-test on a consistent cadence, and compare your trend against the only reference that matters: yourself last quarter.
Total testosteroneFree testosteroneSHBGLH / FSHEstradiolProlactin
Track these biomarkers free →Frequently Asked Questions
How fast does PT-141 work?
Subcutaneous PT-141 typically produces effect within 30-90 minutes per published data. Intranasal is faster but with shorter duration. Effect duration varies 4-12 hours.
Can kisspeptin replace TRT?
Kisspeptin works upstream of LH/testosterone production, so it stimulates the body's own testosterone signaling rather than supplementing exogenous hormone. Users on full HPTA suppression (long-term TRT) often see less response. Discuss with a provider familiar with HPG axis pharmacology.
What labs should I draw before starting?
A baseline panel should include total + free testosterone, SHBG, LH, FSH, estradiol (sensitive assay), and prolactin. Re-test at 8-12 weeks after starting to compare against baseline. MyProtocolStack tracks this entire panel against your protocol calendar.
More peptide collections
For informational and educational purposes only. The peptides discussed on this page are not medical recommendations. MyProtocolStack is a tracking and education platform — it does not diagnose, prescribe, or provide clinical decision support. Always consult a licensed healthcare provider before starting, adjusting, or stopping any peptide protocol. Many peptides discussed here are not FDA-approved for the indications described and require a licensed prescription via a compounding pharmacy.