HGH Fragment 176-191 vs hGHRH(1-44)
Head-to-head comparison of HGH Fragment 176-191 (Human Growth Hormone Fragment 176-191) and hGHRH(1-44) (Human growth hormone-releasing hormone (1-44) amide) — benefits, dosing, side effects, research data, and where to buy.
Research Score
| Property | HGH Fragment 176-191 | hGHRH(1-44) |
|---|---|---|
| Category | Weight Management | Growth Hormone |
| Full Name | Human Growth Hormone Fragment 176-191 | Human growth hormone-releasing hormone (1-44) amide |
| Molecular Weight | 1817.12 g/mol | N/A |
| Half-Life | ~30 minutes | 5-15 minutes |
| Amino Acids | 16 | 44 |
| Typical Dose | — | 0.1-1 mcg/kg |
| Route | — | Subcutaneous/IV |
| Purity | >98% | ≥98% |
| Studies Count | 45 | 120 |
| Research Status | Active Research | Clinical Research |
HGH Fragment 176-191 Benefits
- ✓Targeted fat loss, no blood sugar impact, no IGF-1 elevation, inhibits lipogenesis, stimulates lipolysis, improved body composition
hGHRH(1-44) Benefits
- ✓physiologic GH pulse support
- ✓IGF-1 pathway stimulation
- ✓pituitary receptor mapping
- ✓endocrine research tool
HGH Fragment 176-191 Dosing
250-500 mcg subcutaneously 1-2 times daily on empty stomach. 12-16 week cycles typical in research.
hGHRH(1-44) Dosing
0.1-1 mcg/kg SC or IV bolus for stimulation studies|single-dose endocrine challenge with timed GH sampling|pulsatile administration in clamp/infusion experiments
HGH Fragment 176-191 Side Effects
- ⚠Injection site irritation, headache, drowsiness. Does not affect blood sugar, insulin sensitivity, or elevate IGF-1.
hGHRH(1-44) Side Effects
- ⚠flushing
- ⚠headache
- ⚠transient nausea
Research Overview
HGH Fragment 176-191
This 16-amino-acid fragment specifically targets adipose tissue via beta-3 adrenergic receptors. Works through a GH-receptor-independent pathway, explaining selective fat-loss properties without growth-promoting effects.
hGHRH(1-44)
Human GHRH(1-44) amide has been used extensively to characterize hypothalamic control of pituitary somatotrophs and the downstream GH/IGF-1 axis. It remains a standard comparator in studies of GHRH agonism, secretion dynamics, and receptor pharmacology.
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