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Hexarelin is a synthetic GH secretagogue studied in the context of GHS-R and GH/IGF signalling. This overview presents research findings and their limitations.
Hexarelin is not a GHRH analogue
GHRH analogues act through the GHRH receptor, whereas hexarelin is classified among secretagogues associated with the ghrelin/GHS-R receptor. Both pathways can affect GH release, but they originate from different receptor systems.
What have studies shown?
Early human endocrinology studies described a strong GH response to hexarelin and synergy with GHRH under specific experimental conditions. Other studies showed that repeated exposure and the time interval alter the magnitude of the response.
PubMed: hexarelin, GHRH and the GH response
PubMed: effects of repeated exposure in a research model
| Feature | Hexarelin | GHRH analogues |
|---|---|---|
| Main receptor pathway | GHS-R / ghrelin system | GHRH receptor |
| Primary research outcome | GH secretory response | Stimulation of the physiological GH axis |
| Important limitation | Response depends on the model and protocol | Response depends on pituitary function |
Related profiles
See Hexarelin and the GH/IGF signalling collection.
This content is intended solely for research and educational purposes. It is not medical advice or instructions for use in humans or animals.
Related catalogue and documentation
Hexarelin, examorelin and heksarelin
Hexarelin also appears as examorelin in scientific sources and heksarelin in Croatian searches. When comparing literature, check molecular identity, study design and measured endpoints.