Firstly, to clarify this peptide, GHRP-6 is a peptide a Growth Hormone Releasing hexapeptide, it's a 28 amino acid peptide, and it works by signaling to the pituitary gland to begin secreting Growth Hormone. Molecular Formula: C46H56N12O6 Molecular Weight: 873.01 CAS Registry Number: 87616 6-amino-2-[[2-[[(2S)-2-[[(2S)-2-[[(2R)-2-[[(2S)-2-amino-3-(3H-imidazol-4-yl)propanoyl]amino]-3-(1H-indol-3-yl)propanoyl]amino]propanoyl]amino]-3-(1H-indol-3-yl)propanoyl]amino]-3-phenyl-propanoyl]amino]hexanamide ghrp-6 chemical structure Fig 1. GH-releasing hexapeptide. GHRP-6 lacks opioid activity, but you get a huge pulse, (dose dependent) in your own GH levels, and you get the effects of the increased IGF-1 secreted by the liver. Now both the increased GH and IGF-1 are highly desirable for athletes, bodybuilders and those looking to improve their own physique. Now, you may have heard many bodybuilders saying that when you take GHRP-6 that they get a huge and very intense increase in appetite, about 20 mins after the initial injection. Well, this is caused by the GHRP-6 antagonising the peptide Ghrelin, it mimics it, but, in reality, it actually fights against it causing the signal for gastric emptying and hunger. Ghrelin is what many believes causes obesity, and insulin resistance amongst other things, and I believe this is one way by which GHRP-6 may help reduce fat, by fighting against it. However, there is always a but, if you take more than 150mcg the effects of the gastric emptying can be so strong that you may have the urge to severely stuff yourself with food, so if you're on a bulking cycle this is a great side effect, and, considering the price, it's a very cost-effective one. Therefore, during a bulking run, I rate this as the number one aid in increasing appetite, as you also get very a good anabolic effect and increased strength.