What is GHRP-2?

GHRP-2 (Growth Hormone Releasing Peptide-2) is a synthetic peptide that stimulates the release of growth hormone (GH) from the anterior pituitary gland. It belongs to the family of growth hormone-releasing peptides (GHRPs) and acts via a G-protein-coupled receptor, thereby increasing GH secretion in the body.

GHRP-2, also known as Pralmorelin, was initially developed to treat growth hormone deficiency. Due to its effects on muscle mass, regeneration, and physical performance, it is also discussed in the field of sports research. GHRP-2 belongs to the group of ghrelin mimetics, which can also stimulate appetite in addition to GH release.

Potential Benefits

GHRP-2 is associated with several possible effects: promotion of muscle development through increased growth hormone release, support for body fat reduction, improvement in sleep quality, increased energy and endurance, support for immune function, possible acceleration of regeneration processes after injury, promotion of collagen production, possible reduction of inflammatory processes, and support for a more active metabolism.

Mechanism of Action

GHRP-2 primarily acts by activating the ghrelin receptor (GHS-R1a) in the pituitary gland and hypothalamus, stimulating GH release and influencing protein synthesis and muscle growth, fat metabolism, tissue regeneration, and general metabolic activity. GHRP-2 can also support the natural pulsatile secretion of growth hormone.

Dosage and Usage

A frequently mentioned usage is 400 µg per day, divided into two doses: 200 µg in the morning and 200 µg in the evening, which is 8 units morning and evening with the dosing pen (1 unit = 25 µg). The injection is given subcutaneously in the abdominal area or the anterior thigh. Wait 10 seconds before removing the needle and regularly change the injection site. A typical cycle lasts approximately 4 to 6 months. One pen contains 200 units of 25 µg, which is about 13 to 15 days of use depending on the dosage.

Common Combinations

GHRP-2 is often combined with Ipamorelin (selective GH secretagogue), IGF-1 LR3 (associated with muscle growth and anabolic processes), and Sermorelin (a GHRH analog that can have synergistic effects on muscle mass, regeneration, and metabolism).

Use in Sports

GHRP-2 is discussed in the context of improving athletic performance. Possible effects include faster recovery after training, support for muscle development, improved endurance, and possible reduction in body fat. For this reason, GHRP-2 is banned in professional sports by international anti-doping organizations.

Possible Side Effects

The most frequently reported side effects are: headaches, nausea or digestive upset, muscle or joint pain, increased appetite, and redness at the injection site. These effects are generally mild and transient.