Ipamorelin
Raises growth hormone in people. No trial shows it builds muscle.
Grade B: Some human proof
Small, early or mixed results in people.
The grade is for the use people talk about, not for every use. Filed under: Growth hormone boosters.
How it works
Mimics ghrelin, the hunger hormone, to trigger a short burst of growth hormone.
How it was given in studies
A drip into a vein, in a trial of hospital patients after bowel surgery. An earlier study in healthy men also used a short drip.
This is what the studies did. It is not a how-to. Source: Trial after bowel surgery. International Journal of Colorectal Disease, 2014; Study in healthy men. Pharmaceutical Research, 1999.
What studies saw
Growth hormone pulsed in lab studies. Its one real outcome trial, for bowel recovery after surgery in 114 people, failed.
The trade-off
No human proof it builds muscle or burns fat.
When it showed up, in studies
A growth hormone pulse within the hour.
No human timeline for muscle or fat.
Sources
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Keep going
We show what studies found. We never tell you what to take. Doses vary by study. Check the sources and talk to a doctor.