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Growth hormone-releasing peptides like GHRP-2 and MK-677 (ibutamoren) bind to ghrelin receptors in the pituitary gland, stimulating somatotroph cells to release growth hormone in pulses that mirror endogenous circadian GH secreti…
Comparison table introducing three common peptide classes, their mechanisms, evidence base, and typical research dosing. Kisspeptin Analogs Stimulates GnRH neurons in the hypothalamus to increase pulsatile GnRH release Phase 1–2 …
This table compares the primary peptides used in testosterone-related research based on mechanism, half-life, dosing frequency, and documented effects on gonadotropin pathways. CJC-1295 (with DAC) GHRH analogue. Stimulates sustai…
CJC-1295 + Ipamorelin GHRH analogue + ghrelin agonist. Stimulates pulsatile GH release, elevates IGF-1, upregulates Leydig cell steroidogenesis 12–16% increase in total testosterone; 16–20% increase in free testosterone (16-week …
CJC-1295 / Ipamorelin GHRH + ghrelin mimetic. Stimulates GH release, which upregulates LH and testosterone synthesis CJC: 500 mcg 2×/week; Ipamorelin: 200–300 mcg daily before bed 6–10 weeks for measurable testosterone increase Y…