Macimorelin
Approved, for something elseMeasured in people, not heightBy mouthSmall moleculeAlso Macrilen
A drink used to test whether an adult's pituitary can still release growth hormone; it is a test, not a treatment.
A ghrelin receptor agonist, FDA approved in 2017 as a diagnostic test for adult GH deficiency: it is taken orally and GH is then measured. About 87% sensitivity and 96% specificity against the insulin tolerance test. Discontinued in the US; authorised in the EU as Ghryvelin. A single-use diagnostic, not a treatment.
Risks. It stretches the heart's electrical cycle enough to risk a dangerous rhythm, so it must not be taken with other drugs that do the same.
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Educational content, not medical advice. Nothing here is a recommendation to take or stop taking anything — talk to a doctor about your own situation.