It is a unit of mass where 1000 micrograms (mcg) equals 1 milligram (mg)
In contrast, semaglutide selectively activates the GLP-1 receptor, while retatrutide engages three related receptors across the incretin hormone family
Sermorelin was FDA-approved as Geref by Serono Laboratories in 1997 for diagnosis and treatment of pediatric growth hormone deficiency
[5] That action has been primarily observed in the GI tract, but research has noted similar observations in muscle, neurological, and cardiovascular tissues
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This suggests that GLP-1 receptor activation alone may not substantially increase deficiency risk