Ipamorelin - Generic Peptides

Buy Ipamorelin by Generic Peptides at XSteroids, in 10 mg, 5 mg and 2 mg vials. It belongs to the growth hormone secretagogue group, so its action sits on the pituitary rather than introducing finished hormone. The brand ships lyophilized powder that is mixed with bacteriostatic water before use. Later sections set out where the molecule came from, the volunteer trial data, the dilution sums for each of the three fill sizes, the pairing question and the sporting prohibition attached to the class.

One point needs to be said first: no health authority anywhere has authorised ipamorelin for a medical indication. Its phase II programme in postoperative ileus showed no efficacy signal and development stopped there, leaving research supply as the only market.

What Ipamorelin Is and What You Are Buying

The molecule is a chain of five amino acids, Aib-His-D-2-Nal-D-Phe-Lys-NH2, grown out of the first generation compound GHRP-1 and carrying the development code NNC 26-0161. Its target is the ghrelin receptor, often named the growth hormone secretagogue receptor after the job it does. Occupying that receptor produces one burst of growth hormone per administration instead of a permanently raised level.

Three fill sizes appear on this page: 2 mg, 5 mg and 10 mg of lyophilized powder. Injections go subcutaneously, and supplier notes favour an empty stomach with the shot placed before sleep, the window when the body's own growth hormone pulse is largest.

Three strengths of lyophilized ipamorelin powder carry the Generic Peptides label: 2 mg, 5 mg and 10 mg, and each pack consists of that one vial alone. Diluent and accessories stay out of the pack, so bacteriostatic water, U-100 insulin syringes and swabs are bought on their own, because a dried cake keeps its potency far longer than a solution does. Added to water, that off-white cake becomes a clear liquid.

Ipamorelin Mechanism at the Ghrelin Receptor

Human pharmacokinetics

This peptide rests on human data rather than animal estimates. A 1999 trial infused it into healthy male volunteers at five different rates and recorded proportional behaviour: a terminal half-life close to two hours, clearance at 0.078 l/h/kg, distribution volume at steady state of 0.22 l/kg, and a growth hormone peak reached after 0.67 hours. The concentration delivering half of the maximum growth hormone response was 214 nmol per l.

Selectivity

Selectivity is the point of this compound, and it was measured rather than assumed. Work in rats and pigs left prolactin, thyroid stimulating hormone, luteinising hormone and follicle stimulating hormone unchanged, with no bump in ACTH or cortisol, and that held even when the amount exceeded two hundred times the level needed to release growth hormone. GHRP-2 and GHRP-6, the older peptides, do push those hormones up, and the contrast between them is why ipamorelin is sold as the cleanest member of the family.

How ipamorelin differs from the other secretagogues

Ipamorelin is the selective member of the ghrelin receptor family. Where hexarelin, GHRP-2 and GHRP-6 pull prolactin, ACTH and cortisol up along with the growth hormone, ipamorelin raises growth hormone without moving those three in the human work, and it does not drive appetite the way the older peptides do. Its growth hormone pulse is shorter and smaller than that of hexarelin, but it does not fade as quickly with continued use. Because it acts on the ghrelin receptor and not on the GHRH receptor, it is usually paired with a GHRH peptide rather than used as a substitute for one.

What to Expect With Ipamorelin

What the volunteer trials recorded

In healthy volunteers ipamorelin has a plasma half-life of about two hours and produces a growth hormone peak roughly forty minutes after administration [2]. The same line of work describes a clean profile, with no meaningful change in ACTH, cortisol or prolactin [3], and that selectivity is the whole point of the molecule and the reason it is described as the gentlest of the secretagogues rather than the strongest.

What is not established

The clinical programme did not survive. A phase II study in postoperative ileus found no efficacy signal and the compound was dropped [1], so there is no approved product, no approved dose and no long term safety data in healthy users. The human pharmacokinetic work used intravenous infusion measured in nanomoles per kilogram, while vendor research protocols describe microgram amounts injected under the skin, and the two are not interchangeable. There is no clinical data on the subcutaneous microgram route at all.

What the numbers mean in practice

With a half-life around two hours the growth hormone pulse after a shot is brief, so a protocol is read as a series of pulses, usually dosed before sleep when the body's own pulse is largest. The markers to follow are growth hormone and IGF-1, while the selectivity claim is checked by looking at cortisol and prolactin, which should not move. Unlike hexarelin, ipamorelin does not develop a sharp fall in response, so a block can run longer before the readout flattens.

Ipamorelin Doses and Reconstitution

Diluting Each Ipamorelin Fill Size

Each fill size has its own dilution. One ml of bacteriostatic water in the 2 mg vial yields 2 mg per ml, so 0.1 ml carries 200 mcg. The 5 mg vial takes 2 ml and ends at 2.5 mg per ml, which puts 250 mcg into the same 0.1 ml. The 10 mg vial also takes 2 ml, giving 5 mg per ml and 500 mcg per 0.1 ml. Every such 0.1 ml volume corresponds to 10 units on the U-100 insulin scale. Mix by swirling, then refrigerate.

How Many Days One Ipamorelin Vial Covers

Run the arithmetic on a 250 mcg daily amount and the smallest fill covers roughly eight days, the middle one about 20 and the largest about 40; double the amount and each figure halves. Supplier descriptions put a standard single amount at 200 to 300 mcg and an advanced one at 400 to 500 mcg, once to three times daily, inside 12 to 16 week blocks with a four week gap. No regulator has signed off on any of those numbers.

Stacking Ipamorelin With a GHRH Analogue

Ipamorelin is a ghrelin receptor agonist, while Sermorelin 5 mg and CJC-1295 DAC are GHRH analogues working through a different receptor. Because the pathways are separate, the two are treated as partners: the GHRH analogue prepares the pituitary and the secretagogue sets the release in motion. Tesamorelin is the longer, better studied GHRH analogue and the one most often cited for visceral fat research. Anyone who wants an exact amount of hormone instead of a pituitary response uses Somatropin, and Hexarelin is the potent but less selective alternative on the secretagogue side.

Recovery Notes for an Ipamorelin Block

Because the pituitary keeps doing the work, the testosterone axis is untouched and no post-cycle therapy follows a secretagogue block. What needs to recover is the pituitary response itself, so the gap between blocks is the part that matters. Timing outweighs half-life here: every shot delivers a single pulse, and food blunts that pulse, which is why empty stomach dosing is repeated in most write-ups. Anabolic recovery plans belong to androgen cycles, and this brand carries none.

Ipamorelin Safety Notes and Side Effects

What the literature reports

A 2026 review of class level concerns for unregulated growth hormone peptides flags water retention, joint and muscle aches, reactions where the needle enters, altered glucose handling and hormonal drift. Ipamorelin itself came through profiling without lifting cortisol or prolactin or disturbing the remaining pituitary hormones, which is a narrower profile than its older relatives.

Laboratory handling rules

Treat the vial as laboratory material rather than medicine. Pituitary disease, active malignancy and diabetes are reasons to stay away from secretagogues unless a doctor is directing the work. Keep the vial where children cannot reach it, and discard any solution that shows cloudiness or floating particles.

Cold Storage for Ipamorelin

Powder keeps best between 2 and 8 C in the dark; stock that will sit for months goes in a freezer, and repeated thawing and refreezing is what damages it. Once water is added the vial lives in the refrigerator at 2 to 8 C for no longer than 28 to 30 days. A mixed vial never goes back in the freezer.

Why Buy Research-Grade Ipamorelin from XSteroids?

Every Ipamorelin order leaves the XSteroids warehouse out of the Generic Peptides range, paid for on a protected checkout page and dispatched with tracking. Buyers in the United States wait 3 to 6 days for the parcel, buyers abroad 12 to 26 days. All three fill sizes appear above, while the cards underneath gather the GHRH partners and the repair peptides that often share a secretagogue plan.