Informational only. Not medical advice.INFORMATIONAL PLATFORM ONLY — NOT MEDICAL ADVICE, DIAGNOSIS, OR TREATMENT
Informational only. Not medical advice.INFORMATIONAL PLATFORM ONLY — NOT MEDICAL ADVICE, DIAGNOSIS, OR TREATMENT
Head-to-head comparison of Cagrilintide and HGH Fragment 176-191 — mechanism, side effects, legal status, and pricing.
Cagrilintide is a long-acting acylated amylin analog developed by Novo Nordisk. It is investigational and not FDA-approved; Novo Nordisk's lead development path is the CagriSema co-formulation with semaglutide for weight management. Monotherapy cagrilintide was evaluated in Phase 2 but was deprioritized in favor of the combination.
HGH Fragment 176-191 is a synthetic 16-residue disulfide-cyclized peptide corresponding to the C-terminal region (residues 176–191) of human growth hormone. It is classified as a lipolytic/GH-fragment peptide, not a full growth hormone. The compound is prohibited at all times under WADA Section S2 (Peptide Hormones, Growth Factors, Related Substances and Mimetics). Not FDA-approved for any indication; clinical development of the related analogue AOD9604 was discontinued in 2007 after a pivotal Phase IIb obesity trial failed its primary efficacy endpoint.
Cagrilintide
HGH Fragment 176-191
Category
Legal Status
Mechanism
Side Effects
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Cagrilintide
HGH Fragment 176-191
No pricing data yet.
Check HGH Fragment 176-191 prices →COA corpus from Disclosed Labs — independently tested batches only.
Cagrilintide
79
COAs
99.7%
Avg purity
13
Labs
HGH Fragment 176-191
1
COAs
99.2%
Avg purity
1
Labs
A Phase 2 dose-finding trial of cagrilintide monotherapy demonstrated dose-dependent weight loss of up to 10.8% over 26 weeks versus 3.0% for placebo (Lau et al., The Lancet, 2021). Novo Nordisk pivoted development to the CagriSema co-formulation with semaglutide 2.4 mg. The Phase 3 REDEFINE 1 trial (n=3,417, 68 weeks) in obesity reported ~22.7% mean body weight reduction on the treatment-policy estimand, with 91.9% achieving ≥5% weight loss versus 31.5% for placebo. Novo Nordisk submitted a CagriSema NDA to the FDA in December 2025; the application is under review in 2026. Cagrilintide is not FDA-approved as a standalone therapy, and CagriSema is not yet approved as of April 2026.
Key references
No human data were found for the native peptide (CAS 66004-57-7, Phe176) itself. All identified human clinical work was conducted on AOD9604, a distinct N-terminal Tyr-substituted analogue: six sponsor-run, randomized, double-blind, placebo-controlled trials (Phase I–IIb, 2001–2006, ~900 total subjects, including a ~502-subject 24-week Phase IIb obesity trial) assessed safety and later weight-loss efficacy. Reported: good tolerability, no serious adverse events, no IGF-1 elevation—but the pivotal Phase IIb trial did not meet its primary weight-loss endpoint versus placebo and Metabolic Pharmaceuticals discontinued development in 2007. In obese Zucker rats, oral AOD9604 (500 µg/kg/day × 19 days) reduced body-weight gain by >50% and increased adipose lipolytic activity without impairing insulin sensitivity. In obese and lean mice, both hGH and AOD9604 reduced weight gain and increased fat oxidation and plasma glycerol; unlike hGH, AOD9604 caused no hyperglycemia and did not compete for the hGH receptor. In β3-AR knockout mice, chronic lipolytic/weight effects were lost while acute energy-expenditure increases persisted. Intra-articular AOD9604 combined with hyaluronic acid outperformed either agent alone in a rabbit collagenase-induced knee osteoarthritis model.
Cagrilintide and HGH Fragment 176-191 are both in the Metabolic category and may have overlapping mechanisms. Researchers should review both profiles carefully, understand the mechanisms of action, and monitor the relevant biomarkers when combining compounds in the same class. As always, consult a licensed healthcare provider before making any decisions about combining research compounds.
This platform provides informational tools only, not medical advice. This comparison is for educational purposes only. Consult a licensed provider.
Contraindications
Lab Testing
Key references
Disclosed Labs