Overview

Glucagon-like peptide-1 (GLP-1) receptor agonist used for type 2 diabetes and chronic weight management. Mimics the incretin hormone GLP-1, which regulates blood sugar and appetite.

Global Regulatory Status

Approval status across major regulatory agencies worldwide.

Note: "Unknown" status indicates that comprehensive regulatory information is not yet available in our database. This does not necessarily mean the peptide is not approved. For critical medical decisions, always verify current regulatory status with the relevant health authority.

Mechanism of Action

Binds to and activates GLP-1 receptors, stimulating glucose-dependent insulin secretion, suppressing glucagon, delaying gastric emptying, and reducing appetite through central mechanisms.

Stability & Storage

Form Storage Conditions Shelf Life
Lyophilised
(Freeze-Dried)
Store at 2-8°C (36-46°F) in original carton to protect from light. Do not freeze. Shelf life: 24 months. 24 months
Reconstituted
Solution
After first use, store pen at 2-8°C or at room temperature (up to 30°C) for up to 56 days. Discard if frozen. 56 days
⚠️ Storage Best Practices
  • Always store in original packaging until ready to use
  • Protect from light, moisture, and temperature fluctuations
  • Never refreeze after thawing
  • Use proper sterile technique when reconstituting
  • Discard if solution becomes cloudy or discolored

Target Information

Target Receptors
Glucagon-Like Peptide-1 Receptor (GLP-1R)
Target Tissues
  • Pancreatic beta cells
  • gastrointestinal tract
  • hypothalamus
  • cardiovascular tissue
Target Organs
  • Pancreas
  • stomach
  • small intestine
  • brain (hypothalamus
  • brainstem)
  • heart

Pharmacokinetics: Half-Life by Administration Route

The biological half-life varies significantly depending on the route of administration. This affects dosing frequency and duration of action.

Administration Route Half-Life Clinical Implications
Subcutaneous (SC) Approximately 1 week (165-184 hours), enabling once-weekly dosing Slower absorption, sustained release, most common route
Oral (PO) Approximately 1 week with SNAC absorption enhancer (Rybelsus formulation) Subject to first-pass metabolism, requires formulation technology

Note: Half-life values can vary between individuals based on factors including age, metabolism, kidney/liver function, and co-administered medications.

Molecular Structure

Amino Acid Sequence

2D Chemical Structure

2D Structure Visualization Pending

This peptide contains 31 amino acids.

For larger peptides, the amino acid sequence (shown above) provides the most accurate representation of structure.

2D chemical structure visualization is most effective for peptides with <10 amino acids.

3D Molecular Model

3D structure model will be available soon

Structure visualization powered by 3Dmol.js (integration pending)

Peptide Composition & Modifications

Amino Acid Composition

Natural L-Amino Acids
31 residues
Total Length
31 amino acids

Post-Translational Modifications

Lipidation
C18 fatty acid chain attached to Lys26 via gamma-glutamic acid and 2x8-amino-3,6-dioxaoctanoic acid spacer
Lipid modifications enhance plasma protein binding and extend half-life

Terminus Modifications

N-Terminus (Amino Terminus)
Free NH2 (Histidine)
C-Terminus (Carboxyl Terminus)
Modified with 2-(2-(2-aminoethoxy)ethoxy)acetic acid linker

Terminal modifications can protect against exopeptidase degradation and modulate biological activity.

Nomenclature

Standard Abbreviation
SEMA
Also Known As
  • Ozempic
  • Wegovy
  • Rybelsus
  • NN9535
  • OG217SC

Dosage & Administration

SC injection: 0.25 mg weekly (starting), titrate to 0.5-2.4 mg based on indication. Oral: 3-14 mg daily.

⚠️ Medical Supervision Required

This information is for educational purposes only. Dosing should only be determined by a qualified healthcare provider based on individual patient needs and medical history.

Side Effects & Safety

Common Side Effects

Nausea, vomiting, diarrhea, constipation, abdominal pain, headache, fatigue

Warnings & Precautions

Risk of thyroid C-cell tumors, pancreatitis, gallbladder disease, acute kidney injury

Scientific References

References are organized by topic for easy navigation. Click on PubMed links to view the full articles.

Clinical Trials

Marso SP, et al. (SUSTAIN-6)
Semaglutide and Cardiovascular Outcomes in Patients with Type 2 Diabetes
New England Journal of Medicine (2016)

Mechanism of Action

Nauck MA, et al.
GLP-1 receptor agonists in the treatment of type 2 diabetes: state-of-the-art
Diabetes Care (2021)

Weight Loss

Wilding JPH, et al. (STEP 1)
Once-Weekly Semaglutide in Adults with Overweight or Obesity
New England Journal of Medicine (2021)

Research & Clinical Status

Extensively studied. FDA approved for diabetes (2017) and weight management (2021).

Disclaimer

This information is for educational purposes only and does not constitute medical advice. Always consult with a qualified healthcare provider before starting any new treatment or medication. The information provided here is based on available scientific literature and may not be complete or up-to-date.