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Semaglutide

peptide · headlineResearch use only

GLP-1 receptor agonism: enhances insulin secretion, delays gastric emptying, reduces appetite

Summary

Semaglutide is a long-acting GLP-1 receptor agonist peptide used for weight management and glycemic control. It reduces appetite and caloric intake while enhancing insulin secretion and delaying gastric emptying. Available as Ozempic (for diabetes) and Wegovy (for obesity), it is a proven tool in treating metabolic syndrome and aiding fat loss when combined with lifestyle interventions.

How it works

  • GLP-1 receptor agonism: enhances insulin secretion, delays gastric emptying, reduces appetite
  • Suppresses glucagon secretion
  • Acts on brain centers regulating appetite and satiety

Dosing

  • unit: mg
    low dose: 0.25
    frequency: Once weekly
    high dose: 2.4
    standard dose: 1
    administration route: Subcutaneous (SQ)

Cycling

  • Typical protocol: 0.25 mg/week for 4 weeks → 0.5 mg → 1 mg → 1.7 mg → 2.4 mg. Duration 12–24 weeks. Break for 4–6 weeks between cycles.

Side effects

common: ["GI effects: nausea, vomiting, diarrhea, constipation — decrease with gradual titration","Hypoglycemia risk when combined with insulin or sulfonylureas"]
warnings: ["Rare: pancreatitis, gallbladder disease, acute kidney injury","Thyroid C-cell tumors observed in rodents (human relevance uncertain)"]

Chemistry & PK

sequence: HAEGTFTSDVSSYLEGQAAKEFIAWLVKGRG
half life: Approximately 1 week
degradation: Enzymatic degradation and renal clearance
molecular weight: 4113.58
molecular formula: C187H291N45O59
tissue specificity: Acts on pancreatic beta cells, CNS appetite centers, liver, and GI tract

Verified citations

3 · PubMed-checked
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MonitorGLP-1 alters oral progesterone absorption

Delayed gastric emptying changes oral progesterone (and other oral drug) absorption/timing — adjust co-prescribing.

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MonitorGLP-1 constipation risk in bowel-endo

GLP-1 constipation is problematic in bowel-endometriosis/resection patients.

Legal / compounding

Research use only

Legal status is a hard gate: non-compoundable or delisted agents cannot be filled and are blocked from protocol export. Keep 503A status current.