Kisspeptin-10 (HPG Axis) vs Liothyronine (T3)
A side-by-side research comparison of Kisspeptin-10 (HPG Axis) and Liothyronine (T3) across mechanism, dosing, half-life, benefits, side effects and research status.
Comparison table
| Attribute | Kisspeptin-10 (HPG Axis) | Liothyronine (T3) |
|---|---|---|
| Full name | Kisspeptin-10 (Metastin 45-54) | Liothyronine Sodium (Cytomel) |
| Category | Hormone Replacement | Hormone Replacement |
| Status | Research compound | Prescription medication |
| Mechanism | Binds KISS1R (GPR54) receptors on GnRH neurons in the hypothalamus, triggering pulsatile GnRH release. This cascades to LH/FSH secretion from the pituitary, maintaining the natural feedback loop. | Binds nuclear thyroid receptors to regulate gene transcription for basal metabolic rate, thermogenesis, protein synthesis, and carbohydrate/fat metabolism in virtually every tissue. |
| Molecular weight | 1302.5 Da | 650.97 Da |
| Half-life | ~28 minutes (IV); ~4 hours (SubQ) | ~2.5 days |
| Bioavailability | ~90% (subcutaneous) | ~95% oral |
| Typical dose | 100-400 mcg | 5-25 mcg |
| Frequency | 1-2x daily | Daily (split AM/PM) |
| Route | Subcutaneous injection | Oral tablet or sustained-release capsule |
Kisspeptin-10 (HPG Axis) reported benefits
- Natural testosterone restoration
- Preserved HPG axis function
- Enhanced libido
- LH/FSH stimulation
- Potential fertility support
- No testicular suppression
Liothyronine (T3) reported benefits
- Metabolic rate increase
- Weight loss support
- Improved energy
- Better mood
- Reduced brain fog
- Enhanced fat oxidation
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Research and educational reference only. Not medical advice.