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HGH Fragment 176-191 is a stabilized peptide fragment of the C-terminus of human growth hormone, corresponding to amino acids 176–191 with a tyrosine addition at the N-terminus. It retains the lipolytic activity of full GH but lacks GH's effects on insulin resistance, IGF-1 stimulation, and cellular proliferation.
The 176-191 fragment activates the fat-metabolizing (lipolytic) signaling pathway through GH receptor interactions without stimulating the IGF-1 axis. It inhibits lipogenesis from glucose in adipocytes and enhances fat breakdown by upregulating hormone-sensitive lipase activity, particularly in visceral fat depots. In rodent studies, it demonstrates 12.5x greater lipolytic potency than full GH at equivalent molar concentrations.
The 176-191 fragment activates the fat-metabolizing (lipolytic) signaling pathway through GH receptor interactions without stimulating the IGF-1 axis. It inhibits lipogenesis from glucose in adipocytes and enhances fat breakdown by upregulating hormone-sensitive lipase activity, particularly in visceral fat depots. In rodent studies, it demonstrates 12.5x greater lipolytic potency than full GH at equivalent molar concentrations.
HGH Fragment 176-191 is a stabilized peptide fragment of the C-terminus of human growth hormone, corresponding to amino acids 176–191 with a tyrosine addition at the N-terminus. It retains the lipolytic activity of full GH but lacks GH's effects on insulin resistance, IGF-1 stimulation, and cellular proliferation. Developed specifically as a safer fat-loss alternative to HGH.
IUPAC Name
Tyr-hGH(176-191)
CAS Number
66004-57-7
Molecular Formula
C78H123N23O23S2
Molecular Mass
1817.12 g/mol
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No listings found for HGH Fragment 176-191.
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HGH Fragment 176-191 is a stabilized peptide fragment of the C-terminus of human growth hormone, corresponding to amino acids 176–191 with a tyrosine addition at the N-terminus. It retains the lipolytic activity of full GH but lacks GH's effects on insulin resistance, IGF-1 stimulation, and cellular proliferation. Developed specifically as a safer fat-loss alternative to HGH.
HGH Fragment 176-191 is available in vials, capsules, and sprays forms.
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2 PubMed studies
Data Completeness
63%Research Credibility
Limited research available
Molecular Weight
1817.12 g/mol
CAS Number
66004-57-7
Trial Phase
Phase 2
Common Side Effects
Stop Use If
Research Disclaimer
This information is for educational and research purposes only. Not intended as medical advice. Consult a healthcare professional before use.