How long does Hexarelin take to work?
In the first week of Hexarelin, strong GH pulse felt as deep sleep. Some flushing. Around week 4, cycle endpoint. Stop and switch back to Ipamorelin/CJC for maintenance. By week 8, off-cycle. Receptors recovering before next short cycle. Response varies between people, this is the commonly reported pattern, not a guarantee.
Week by week
- Week 1: Strong GH pulse felt as deep sleep. Some flushing.
- Week 4: Cycle endpoint. Stop and switch back to Ipamorelin/CJC for maintenance.
- Week 8: Off-cycle. Receptors recovering before next short cycle.
References
- Hexarelin and growth hormone secretion — Imbimbo BP et al., JCEM, 1994
- Effects of acute hexarelin administration on cardiac performance in patients with coronary artery disease during by-pass surgery — Broglio F et al., European Journal of Pharmacology, 2002
- Cardiac effects of hexarelin in hypopituitary adults — Bisi G et al., European Journal of Pharmacology, 1999
Pepdex is an editorial reference, not medical advice. Peptides vary in legal and approval status by country, many are research compounds without full human safety data. Talk to a qualified clinician before starting anything.
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Last updated 2026-06-06.