Growth Hormone Axis & IGF-1 Signaling

A long-acting growth hormone booster, often paired with Ipamorelin for steady, round-the-clock growth hormone support.

A myostatin-blocking research protein studied for promoting muscle growth by removing a natural brake on muscle development, rather than stimulating growth hormone.

A potent growth-hormone-releasing peptide, used in Japan as a diagnostic test for growth hormone deficiency. Also mildly stimulates appetite, unlike some newer alternatives.

One of the original growth-hormone-releasing peptides, known for combining strong GH stimulation with a pronounced appetite-boosting effect.

One of the most potent growth-hormone-releasing peptides studied, with a distinct cardioprotective effect separate from its GH-stimulating activity.

A once-daily pill that raises growth hormone the same way injectable growth hormone-releasing peptides do — but it's chemically a small molecule, not an actual peptide, which is why it can be taken orally.

A heavily modified, long-lasting version of IGF-1 — the hormone that does most of growth hormone's actual muscle-building work — engineered to stay active in the body far longer than the natural version.

A gentle growth hormone booster that signals your pituitary gland to release more growth hormone — without the jittery side effects of older compounds.

A natural muscle-repair signal your body releases after intense exercise or injury. The synthetic version sold online is chemically unstable and breaks down almost immediately.

A pegylated, longer-acting version of MGF, engineered to overcome standard MGF's extremely short stability window.

A growth-hormone-releasing peptide that was actually FDA approved decades ago — the brand was pulled from the market for business reasons, not safety concerns, and it's still available today through compounding pharmacies.

One of the few growth-hormone peptides that's actually FDA approved — but only for a specific fat-redistribution condition in HIV patients. Any other use is off-label.