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A short-fuse version of IGF-1. Acts fast, acts local, then clocks out. Studied for site-specific tissue research.

Acts like a bouncer for myostatin, the protein that tells muscle "that's enough." Studied for taking the brakes off.

The original wake-up call to the pituitary. The natural hormone every "GHRH analog" is trying to imitate.

Mimics ghrelin, the hunger hormone, to ring the growth-hormone bell. Researchers study the second job, not the snack cravings.

Same shoulder-tap as its cousin but with a longer grip. One signal that lingers for days, not minutes.

The classic duo. One knocks on the growth-hormone door, the other holds it open. Studied as a stack.

The oral one. Tricks the gut into ghrelin's growth-hormone signal, no needle required. Studied for sustained GH research.

Ghrelin's louder cousin. Same growth-hormone bell, with a notorious appetite side-conversation researchers find hard to ignore.

The most aggressive of the ghrelin-mimics. Rings the growth-hormone bell hardest, which is exactly why researchers study it.

The shortest honest version of GHRH, just the working fragment, studied for nudging natural growth-hormone rhythm.

IGF-1 with a backstage pass. Dodges the proteins that usually retire it early, so it stays active far longer.