Comparison tool
Compare peptides
Pick up to three compounds. Useful for deciding whether two peptides in a stack actually do different things, or whether you're paying twice for the same pathway.
Select up to three (1/3)
| Attribute | |
|---|---|
| Category | Sexual health |
| Evidence grade | Emerging |
| Also known as | Metastin fragment 45-54 |
| Mechanism | Binds KISS1R on GnRH neurons, stimulating pulsatile GnRH release and downstream LH and FSH secretion — the master switch of the hypothalamic–pituitary–gonadal axis. |
| Key benefits | Increased LH and testosterone signalling · Enhanced limbic response to sexual stimuli in imaging studies · Fertility applications under investigation |
| Side effects | Limited safety data · Headache · Possible hormonal disruption with chronic use |
| Half-life | Under 30 minutes |
| Administration | Subcutaneous injection |
| Dosing overview | Research doses vary; community use is typically low-microgram and infrequent |
| Storage | Refrigerated after reconstitution |
| Legal status | Research chemical, not approved for human use. |
Dosing figures reflect published literature and commonly reported community protocols. They are informational only.