Frag 176-191, termed Lipolytic Fragment, is the modified version of AOD 9604. It is a small chunk of the human growth hormone. According to research, Frag 176-191 mimics the fat-burning effects of the parent protein. Frag 176-191 increases insulin levels without increasing insulin-like growth factor-1 (IGF-1) levels, negatively affecting carbohydrate metabolism, altering insulin sensitivity, and increasing long bone growth. Scientists believe that the fat-burning ability of Frag 176-191 could make it a vital ancillary for producing anti-obesity medications.
Fragment 176-191 peptide is injectable and is known as a concentrated and stabilized version of the growth hormone-releasing factor—GRF, which can cause a rapid increase in bodily growth hormone 12.5 times stronger. Frag 176-191 can also function to stimulate protein synthesis, increase vascularity via nitrogen retention, increase bone mineral density and modify aging effects. It can improve sleep and increase strength via hyperplasia.

The Functions/Roles of Frag 176-191

1. Frag 176-191 can Lower Blood Sugar Level:

Research shows that Frag 176-191 is the most potent synthetic equivalent of the human growth hormone for reducing blood sugar levels. This effect is secondary to the increase in plasma insulin levels. Research is ongoing to determine if Frag 176-191 could treat prediabetes and type II diabetes.

2. Frag 175-191 Increases the Regeneration of Cartilage:

Though interest in Frag 176-191 is primarily for its lipolytic functions, research is ongoing to determine its other benefits.
In 2015, research from Korea showed that Frag 176-191 increases the effects of hyaluronic acid injections that can promote cartilage regeneration.
Studies in rabbits showed that the weekly injection of Frag 176-191 increases cartilage growth laboratory standards, and its combination with hyaluronic acid produces a more potent effect. The overall result proves that administering Frag 176-191 alone and alongside hyaluronic acid can reduce the disabilities following osteoarthritis. Scientists believe that it may amount to the introduction of advanced therapies for osteoarthritis and may alleviate surgical needs.

3. The Roles of Frag 176-191 in Fat-Burning and Weight Loss:

Fragment 176-191 is commonly referred to as Lipolytic Fragment because of its fat-reducing effect and weight loss properties. This function is mediated by increased beta-3 adrenergic receptor production (𝛃3-AR or ADRB3). The agonist action of ADRB3 is to accelerate the burning of fat in adipose tissues and thermogenesis in skeletal muscles. Mouse models genetically induced to not produce ADRB3 cannot respond to the lipolytic effects of hGH or Frag 176-191.
Research shows that the fat-burning effect of Frag 176-191 is accompanied by energy expenditure and weight reduction, amounting to about 50% of reduced weight gain in animals with obesity over administration for three weeks. Notably, the weight reduction effect is evident only in mice with obesity. In lean mice, they maintained their standard body weight even on exposure to Frag 176-191. These results prove that there are specific pathways for lipolysis that are responsible for overriding the effect of ADRB3 when the body weight is normal or near normal.

Other functions of Frag 176-191

In 2013, scientific research established a Journal of Endocrinology and Metabolism targeted at accessing the rate and significance of the adverse effects associated with Frag 176-191. This research found that the IV and oral administration of Frag 176-191 when in comparison with placebo, resulted in no noticeable changes in:
● Glucose levels
● Glucose tolerance
● IGF-1 levels
● Insulin sensitivity
● Laboratory parameters
● Physical findings and
● Rates of adverse events such as headache
This result proves that Frag 176-191 offers robust benefits of the human growth hormone without associated adverse effects. This research offers insight into human growth regulation, fat deposition, and energy homeostasis. It proves that fat loss is possible without modulating energy homeostasis in other nutrient pathways, paving the way for deep examinations and methods of regulating human energy.
It is vital to note that the human growth hormone is known for its anabolic effects on muscles; however, its synthetic version—Frag 176-191 can bypass anabolism. This is advantageous because its lipolytic effects cannot produce acromegaly or any condition linked to the administration of the human growth hormone. Scientific research proves that Frag 176-191 does not promote cell proliferation.


Interest in Fragment 176-191 is primarily for its lipolytic and weight loss effects. However, research is ongoing to determine its functions in metabolism, energy homeostasis, and the regeneration of connective tissue, preferably cartilage repair.
Frag 176-191 is a research peptide limited to educational and scientific purposes, not for human use or consumption.

Disclaimer: The products mentioned are not for human or animal consumption. All the information shared in this article is for educational purposes only.

Role of Copper Peptide in the Improvement of the Growth of Hair Follicle

Copper Peptide is formed as a result of the affinity of the human peptide, GHK (glycyl-L-histidyl-L-lysine), to the Cu(2+) (Copper 2+). In the human body, the Copper Peptide has varied roles like collagen stimulation, anti-inflammatory, anti-oxidant effects, enhancing...

How does Epitalon reverse aging?

Epitalon is a peptide that has been majorly studied for its anti-aging influence. The findings have been restricted to animal studies. Hence the efficacy of the molecule in humans is subject to conjecture. The molecule has been shown to reverse the aging process...

Unique Effect of Sermorelin on Sleep

What is Sermorelin peptide? Sermorelin peptide is a synthetic analog of the naturally occurring growth hormone-releasing hormone (GHRH). GHRH is a 44 amino acid long peptide, and Sermorelin peptide comprises the first 29 amino acids. The shortened peptide is...

Ipamorelin and GHRP-2

Ipamorelin and GHRP-2 are synthetic peptides that enhance the secretion of growth hormones. Owing to the identical physiological role, they are often mistaken to be the same. On the contrary, both molecules are distinctly different and only share a common functional...

Peptides for BodyBuilding: Do They Work and Are They Safe?

Peptides are short amino acid sequences of constant interest in the bodybuilding community. They are considered an important tool in improving the performance of bodybuilders, especially those who pursue it as a profession. Hence, the growth hormone secretagogue (GHS)...