What is Ipamorelin?

Ipamorelin is a selective ghrelin receptor (GHS-R) agonist and belongs to the GHRP (Growth Hormone Releasing Peptides) family. It is a synthetic pentapeptide known for its ability to stimulate the release of growth hormone (GH) from the pituitary gland.

Unlike other GHRP peptides like GHRP-2 or GHRP-6, Ipamorelin stands out due to its high selectivity. Studies show that it can promote GH release without significantly increasing cortisol or prolactin levels. Ipamorelin is therefore frequently used in research on growth hormone regulation, regenerative physiology, cell growth, and neurogenesis.

Potential Benefits of Ipamorelin

Growth Hormone Stimulation

Ipamorelin selectively activates GHRP receptors, leading to a pulsatile release of GH from the anterior pituitary gland.

Improved Recovery

Elevated GH levels can support processes related to tissue growth, cellular repair, and regeneration.

Maintenance of Muscle Mass

Research suggests that Ipamorelin can reduce catabolic processes, especially during caloric restriction or physical stress.

Increased Lipolysis

Increased growth hormone activity can promote the mobilization of fat reserves and contribute to improved metabolism.

Neuroprotective Effects

Some studies indicate possible effects on cognitive functions and neurogenesis.

No Increase in Cortisol or Prolactin

A major advantage over other GHRP peptides: Ipamorelin does not cause significant stimulation of cortisol or prolactin.

Mechanism of Action of Ipamorelin

Ipamorelin acts by binding to ghrelin receptors (GHS-R) in the pituitary gland, leading to a pulsatile release of GH. Unlike other GHRP peptides, Ipamorelin produces a selective release of GH without increasing stress hormones like cortisol. Its action is characterized by a regular and controlled release dynamic, allowing for a stable hormonal response.

Dosage and Use of Ipamorelin (10 mg)

A frequently used daily dose is 400 µg, divided into two doses of 200 µg:

4 units in the morning
4 units in the evening

The injection is administered subcutaneously in the abdominal area or the front of the thigh. Wait 10 seconds before removing the needle and regularly change the injection site.

A typical cycle lasts 4 to 6 months. One pen contains 200 units of 50 µg and lasts approximately 25 days depending on the dosage.

Dosage Examples

1 unit — 50 µg | 4 units — 200 µg | 5 units — 250 µg | 6 units — 300 µg

Combination with Other Peptides

CJC-1295 without DAC

Can prolong the duration of GH release and is often studied in combination with Ipamorelin.

GHRP-2 / GHRP-6

Also stimulate GH release but often show greater effects on appetite.

HGH Fragment 176-191

A peptide primarily studied in relation to lipolysis and fat metabolism.

Possible Side Effects of Ipamorelin

Ipamorelin is considered one of the best-tolerated peptides in the GHRP family. Mild and transient side effects have been observed in some studies:

• Headaches
• Mild muscle pain
• Constipation
• Dry mouth

These effects usually disappear after a few days as the body adapts.