Claimed effect · Hexarelin

Does Hexarelin help with cardiac effects?

D
Grade D — no human evidenceMechanistic only · effect size: not measurable
Short answerNo human evidence. As of 3 September 2026, only mechanistic only exist for Hexarelin for cardiac effects. Hexarelin binds a receptor (CD36) in the heart and has cardiovascular effects in animals and acute human physiology studies. No controlled trial has tested a clinical cardiac outcome.

What the studies show

Hexarelin binds a receptor (CD36) in the heart and has cardiovascular effects in animals and acute human physiology studies. No controlled trial has tested a clinical cardiac outcome.

Animal studies, cell studies, or anecdotes only. This is where almost every viral peptide sits. Promising and proven are different words for a reason.

  1. 1
    Arvat E, et al. Endocrine activities of ghrelin in humans: comparison with hexarelin and GHRH.J Clin Endocrinol Metab, 2001;86:1169–1174Acute GH-releasing potency of hexarelin in people.

In context

Hexarelin is a synthetic six-amino-acid growth-hormone-releasing peptide. Single doses cause a strong, well-documented growth-hormone spike in humans, but the one study of continued use showed the response fades within weeks and that IGF-1 and body composition did not meaningfully change. It was never developed into an approved medicine, and the muscle, fat-loss and cardiac claims made for it have no controlled human evidence.

Hexarelin is not approved. Legal status differs by country — see the regulation section or the jurisdiction pages.

Questions

Is Hexarelin proven to help with cardiac effects?
No. There is no human evidence for it (Mechanistic only); the claim rests on animal or cell studies and LYO grades it D.
What studies are behind the grade?
Hexarelin binds a receptor (CD36) in the heart and has cardiovascular effects in animals and acute human physiology studies. No controlled trial has tested a clinical cardiac outcome.
Is Hexarelin approved for this?
No. Hexarelin is not approved; it is not an approved medicine for any indication in the jurisdictions LYO covers.

Other outcomes for Hexarelin

Written and maintained by LYO Research — how pages are written and checked. Reviewed 3 September 2026. Grades count human evidence only; see how LYO grades. Not medical advice. Correct this page →