GHRP was first envisioned to be an analog of GHRH but, from comparison of the activity of GHRH and GHRPs between 1982 and1984, it was hypothesized to reflect the activity of a new hormone regulator of GH secretion, yet to be isolated and identified. Intravenous bolus GHRP releases more GH than GHRH in humans, but the reverse occurs in vitro. GHRPs are pleiotropic peptides with major effects on GH, nutrition, and metabolism, especially as an additional hormone in combination with GHRH as a new regulator of pulsatile GH secretion. The first indication of pleiotropism was an increase of food intake by GHRP. A major reason for the prolonged initial interest in the GHRPs has been its similar, yet different and complementary, action with GHRH on GH regulation and secretion.
The Half Life of GHRP 2 is pretty short. GHRP 2 helps improve the levels of calcium in the body and this can in turn facilitate the secretion of other growth hormones. GHRP 2 is believed to be more potent in its operation as compared to other peptide forms, including GHRP 6. GHRP 2 has the ability to stimulate secretion of other growth hormones and increase food consumption. When you start taking in GHRP 2 at regular intervals the level of growth hormones being released in your body increases considerably. GHRP 2 is known to have better control in the release of prolactin and Cortisol.
Used for muscle building, weight loss and anti-aging purposes, this is a very powerful peptide for promoting growth hormone release. GHRP-6 also helps in fighting inflammation and boosting recovery. Some professional bodybuilders are believed to use it together with steroids for greater potency. The peptide not only stimulates the pituitary to produce growth hormone, but also suppresses somatostatin which could impede release.
Obviously, Increasing GH (and therefore IGF-1) levels are desirable for those looking to improve their physique in terms of increased muscle mass and loss of body fat, rejuvenation and strengthening of joints through connective tissue synthesis and bone mass density increases, as well as enhancing immune response and stimulating the immune system, particularly in those of us getting on in years (ahem). For anti-ageing purposes, GHRP-6 is normally singly dosed just before bed at night with users reporting the best night’s sleep they have ever had plus some funky dreams to match (since GH is released during REM or ‘dream sleep’ so the GHRP-6 sort of ‘forces’ us to dream). For bodybuilding purposes, users attempt to mimic pulsatile GH release for best results by administering multiple times throughout the day.
Unlike GHRP 6, the Half Life of GHRP 2 is pretty short. In fact, GHRP 2’s peak can be seen occurring within fifteen minutes after it has been administered or at least one hour at the latest. Also unlike GHRP 6, GHRP 2 helps improve the levels of calcium in the body and this can in turn facilitate the secretion of other growth hormones. GHRP 2 is believed to be more potent in its operation as compared to other peptide forms, including GHRP 6. Therefore, it is not surprising to see this peptide commonly employed for treating catabolic deficiencies.
CJC 1295 has shown some amazing results as a growth hormone releasing hormone (GHRH) analog. Not only has CJC 1295 shown potential to increase growth hormone and IGF-I secretion and effects, but it has been able to do so in very large amounts. CJC 1295 Stimulates Growth Hormone Secretion, and will keep a steady increase of HGH and IGF-1 with no increase in prolactin, leading to fat loss, and increased protein synthesis thereby promoting growth.
According to pilot studies, our group determined that 400 μg/mL represented an optimal dose level by reducing inflammation, promoting collagen fibers alignment, while aborting the onset of HTS in rabbit ears. A lower dose (200 μg/mL) did not prevent the exuberant phenotype whereas a higher dose (800 μg/mL) delayed reepithelialization in rats and rabbits (data not shown).
It has been discovered that when GHRP-6 and insulin are administered simultaneously, GH response to GHRP-6 is increased (1). However, the consumption of carbohydrates and/or dietary fats, around the administration window of GH secretagogues significantly blunts the GH release. A recent study in normal mice showed significant differences in body composition, muscle growth, glucose metabolism, memory and cardiac function in the mice being administered the GHRP-6 (2). There are still many questions regarding this fairly new compound, scientists are hoping to gain a better clinical understanding of the peptide through further research over the next few years.