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However, it does fade over time to a very muted sage brown

366,453,454 The relationship between these structural and functional brain changes and metabolic factors remains poorly understood, with potential mechanisms including vascular injury, oxidative stress, osmotic imbalances, and glial and neuronal damage

Semaglutide: FDA-approved for weight management (2021) and type 2 diabetes Widely available via prescription Available from research peptide suppliers Established insurance coverage pathways Years of post-marketing safety data Cagrilintide: Not FDA-approved (investigational as of March 2026) Phase 3 REDEFINE trials complete with positive results Available from some research peptide suppliers as a research chemical No insurance coverage Limited long-term safety data (68 weeks maximum from trials) Cost Considerations Without FDA approval, cagrilintide has no established retail price

Two decades of clinical use, multiple cardiovascular outcome trials, and a growing list of approved indications now sit behind these molecules