Understanding Ipamorelin Dosing in Research
Ipamorelin is a selective growth hormone secretagogue (GHS) and ghrelin mimetic that stimulates growth hormone release from the anterior pituitary without significantly affecting cortisol or prolactin levels. This selectivity makes it one of the most studied GHRP-class peptides for growth hormone research.
Mechanism of Action
Ipamorelin binds to the GHS-R1a (growth hormone secretagogue receptor) in the pituitary gland, triggering pulsatile GH release that mimics the body’s natural secretion pattern. Unlike other GHRPs such as GHRP-6 and hexarelin, ipamorelin demonstrates high selectivity for GH release with minimal stimulation of ACTH, cortisol, and prolactin.
Research Dosing Protocols
Clinical and preclinical research has established several dosing approaches for ipamorelin:
Standard Research Protocol
- Dose: 200-300mcg per administration
- Frequency: 2-3 times daily
- Administration: Subcutaneous injection
- Duration: 8-12 weeks in typical research cycles
Timing Considerations
Growth hormone secretion follows circadian patterns, and research protocols account for this:
- Morning dose: Upon waking, before food intake
- Pre-sleep dose: 30-60 minutes before bed (synergizes with natural nocturnal GH pulse)
- Post-exercise dose: When studying exercise-GH interactions
- Key rule: Administer on empty stomach — food (especially fats/carbs) blunts GH response
Combination Protocols: Ipamorelin + CJC-1295
A substantial body of research examines ipamorelin combined with CJC-1295 No DAC (modified GRF 1-29). The rationale: CJC-1295 amplifies GH release through the GHRH pathway, while ipamorelin acts through the ghrelin pathway. These complementary mechanisms produce synergistic GH elevation beyond either peptide alone. See our comparison guide for details.
Dose-Response Research
Phase 2 clinical trials demonstrated dose-dependent GH release with ipamorelin. Doses of 1mcg/kg body weight produced significant GH elevation, with peak response typically occurring 30-45 minutes post-injection. The GH response plateaus at higher doses, suggesting a ceiling effect mediated by somatostatin feedback.
Reconstitution
Reconstitute lyophilized ipamorelin with bacteriostatic water. A common approach: 2mL BAC water per 5mg vial yields 2,500mcg/mL concentration, making dose calculation straightforward. Refer to our reconstitution guide for detailed instructions.
Storage
Store unreconstituted ipamorelin at -20°C to 4°C. Reconstituted solution at 2-8°C, used within 3-4 weeks. Light and heat accelerate degradation. See our storage guide for best practices.
For research and educational purposes only. Ipamorelin is sold for research use only. Check our COAs for purity verification.