HGH fragment 176–191
HGH Frag 176-191, Frag 176-191, hGH 176-191, Human growth hormone fragment 176-191
Forms: Reviews treat it as the same compound as AOD-9604 (hGH 177–191 with a tyrosine added at the start), which has its own card.
Other esters and forms: AOD-9604 (modified HGH fragment)
A short peptide from the tail end of the growth hormone molecule, sold to gym users as a 'fat-burning' research peptide. Reviews treat it as the same compound as AOD-9604, which failed its obesity trials.
Legal status: Not approved as a medicine anywhere; sold as a 'research chemical', rules vary by country. Banned in sport at all times (WADA S2.2.3 names hGH 176–191).
What it gives
What people use it for and what the sources report. Strength is a general category from the literature: mild, clear or strong.
Purpose
Used for fat loss while dieting, especially 'stubborn' fat. Not a medicine anywhere. Human data come from trials run under the name AOD-9604 (mostly tablets): well tolerated, but no meaningful weight loss, no IGF-1 rise and no anabolic effect.
What people seek and what studies show
People hope to burn fat without GH's effects on blood sugar, water or IGF-1. In obese mice it cut body fat and raised fat breakdown. In 534 obese adults over 24 weeks (as AOD-9604) it did not beat placebo for weight loss (sponsor-reported). Injections, and any use in athletes or trained people, are unstudied.
Effects
Evidence: Limited human data — some human studies, small or short
Sought effects by goal (as reported)
Possible side effects
Possible does not mean certain: whether they appear depends on dose, duration, individual response and monitoring. Below — what to watch for and how to notice it early.
3 possible side effects
level · how often it is reportedWhat the levels mean
Level: general category from the literature, not your personal risk
How often
- common
- reported often
- possible
- reported in some people
- rare
- reported occasionally
How to lower the risks
General ways to lower the chance of each side effect. No measure removes a risk completely.
Products obtained without a prescription are often fake, mislabeled or non-sterile, and there is no way to check at home. For legal supplements, third-party testing (Informed Sport, NSF) lowers, but does not remove, the risk of a positive doping test.
What is unknown cannot be lowered, only avoided; tell your doctor what you have taken.
Low-level side effects
Check-ups and blood tests
Which tests and check-ups to do and when. This is a guide — agree the exact schedule with a sports physician.
Which doctors can help
Myth & fact
“Frag 176-191 burns fat like growth hormone, but without the side effects.”
It raised fat breakdown in mice, but in a large human trial (as AOD-9604) it did not beat placebo for weight loss, and its long-term safety is unknown.
Combinations
No specific combination notes for this substance yet. The stack check still adds up side effects that several substances share.
Sources
Possible side effects by body system, combinations, how to lower the risks and which tests to do — free.
Open the stack check