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Why is MK-677 not FDA approved?

It finished late-stage studies, but the results did not support approval. One well-known study in older adults found it raised growth hormone and IGF-1 as planned. But it also raised blood sugar and did not improve the physical function it was tested for. That result, not a lack of testing, is why a pill that got to late-stage studies never reached the market.

Every FDA-approved compound in the archive, as a list

Studies in people from the compound pages this answer belongs to

Educational use only. This database summarizes published research and is not medical advice. Where a dose appears it is a record of what a trial or clinic ran, or what people describe doing, with its source attached. Nothing here is a recommendation for personal use.

Part of growth hormone secretagogues. Sermorelin, tesamorelin, ipamorelin, CJC-1295, and the rest of the GHRH and ghrelin receptor family.

Others in growth hormone secretagogues

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