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Testosterone Boosting Peptides Men Over 40: Comparison
| Peptide | Mechanism | Half-Life | Typical Research Dose | Receptor Desensitization Risk | Secondary Effects | Professional Assessment ||—|—|—|—|—|—|| CJC-1295 (no DAC) | GHRH receptor agonist. Stimulates pituitary GH release | ~30 minutes | 100–200mcg 2–3× d
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This page preserves a source comparison for education. It does not add a rating, recommendation or clinical judgment.
- | Peptide | Mechanism | Half-Life | Typical Research Dose | Receptor Desensitization Risk | Secondary Effects | Professional Assessment ||—|—|—|—|—|—|| CJC-1295 (no DAC) | GHRH receptor agonist. Stimulates pituitary GH release | ~30 minutes | 100–200mcg 2–3× daily | None. Suitable for long-term use | Minimal cortisol or prolactin elevation | Best foundational peptide for sustained GH elevation without receptor fatigue || Ipamorelin | Ghrelin receptor agonist (GHS-R). Triggers GH pulse | ~2 hours | 200–300mcg per injection | Minimal. Receptor remains responsive >12 weeks | No cortisol or prolactin spike | Cleanest side-effect profile. Ideal for combination with CJC-1295 || Hexarelin | Potent GHS-R agonist. Highest GH pulse amplitude | ~70 minutes | 2mcg/kg body weight | Moderate. Desensitizes after 14–21 days continuous use | Cardioprotective via CD36 receptor binding | Most potent short-term GH elevation. Requires cycling to avoid receptor fatigue || MK-677 (Ibutamoren) | Oral ghrelin