It's close to my experience, but for me lack of IGF-1 elevation is perhaps desirable. I tried 12.5 mg ibutamoren (MK-677) qd and liked the results: better sleep, hydration and athletic performance. IGF-1 was 20% higher than baseline. But I read some things that made me nervous about this drug, beyond even the possibility that higher IGF-1 is problematic for longevity. In any case, I switched to ipamorelin, about 275 mcg qd. I still get the better sleep, but athleticism and hydration aren't quite as good. Notably, my IGF-1 is back to my baseline, and I'm comfortable with that.... my bloods just came back with an IGF-I that was lower than my baseline level by a few points. ... Is this normal due to the short half life of Ipamorelin? ...