I'm in a bit of disbelief right now. Are we asking the difference between Ipamorelin and the oral Ibutamoren?
Both are GH releasing compounds but act entirely differently. Ipam is injection only and is far superior. Dosing is also very different.
One pulses the other creates a constant secretion, which can serve a purpose but is not recommended for long periods of time.
Ipamorelin is the way to go. Taken with Mod-grf (which is often faked), you can get great results.