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Liraglutide: the complete guide

Liraglutide is a once-daily GLP-1 receptor agonist FDA approved for type 2 diabetes (Victoza) and chronic weight management (Saxenda). It is the predecessor to once-weekly semaglutide and remains widely prescribed.

Written by Peptide Protocol Editorial Medically reviewed per our review process Last reviewed
ClassGLP-1 receptor agonist
Half-lifeApproximately 13 hours (once-daily dosing)
Typical doseTitration: 0.6 mg → 1.2 mg → 1.8 mg → 2.4 mg → 3.0 mg daily (Saxenda); 0.6 mg → 1.8 mg daily (Victoza)
CategoryMetabolic / GLP-1
Research useType 2 diabetes, chronic weight management, cardiovascular risk reduction
FDA statusFDA approved. Victoza for type 2 diabetes; Saxenda for chronic weight management.

How Liraglutide works

Liraglutide binds and activates the GLP-1 receptor, increasing glucose-dependent insulin secretion, slowing gastric emptying, and reducing appetite via central satiety pathways.

Typical Liraglutide dosage

Commonly reported research ranges: Titration: 0.6 mg → 1.2 mg → 1.8 mg → 2.4 mg → 3.0 mg daily (Saxenda); 0.6 mg → 1.8 mg daily (Victoza).

Dose should always be individualized. Factors that influence it include bodyweight, research goal, tolerance, and specific compound batch. The information below is educational, not a prescription.

How to reconstitute Liraglutide

A widely used reconstitution for a 3 mg vial is 0.5 ml of bacteriostatic water. With a typical 600 mcg dose this works out to the unit count shown in the calculator below.

Open the Liraglutide reconstitution calculator →

Pre-filled with the common 3 mg + 0.5 ml ratio. Adjust for your own vial.

Half-life and administration frequency

Approximately 13 hours (once-daily dosing).

This half-life informs how often Liraglutide is typically dosed. Shorter half-lives usually mean more frequent dosing to maintain plasma levels; longer half-lives allow daily, weekly, or less-frequent administration depending on the compound.

Reported side effects

This list reflects effects reported in available literature or user logs. It is not exhaustive. Adverse reactions should be discussed with a qualified clinician.

Common Liraglutide stacks

Storage and handling

Refrigerated 2–8 °C before first use. In-use pen at room temperature (below 30 °C) for up to 30 days.

FDA and regulatory status

FDA approved. Victoza for type 2 diabetes; Saxenda for chronic weight management.

Liraglutide clinical trials and evidence

For clinical-trial and primary-literature context, start with the sources below. We prioritize official drug labels, ClinicalTrials.gov records, and PubMed-indexed literature when available.

For Liraglutide, the public evidence base is summarized in the references section; not every research peptide has robust registered human clinical trials.

Track your Liraglutide protocol on iPhone

Peptide Protocol logs every dose, calculates reconstitution for you, and keeps your full protocol on one calm screen.

See the app →

Frequently asked questions

What is Liraglutide?

Liraglutide is a once-daily GLP-1 receptor agonist FDA approved for type 2 diabetes (Victoza) and chronic weight management (Saxenda). It is the predecessor to once-weekly semaglutide and remains widely prescribed.

How does Liraglutide work?

Liraglutide binds and activates the GLP-1 receptor, increasing glucose-dependent insulin secretion, slowing gastric emptying, and reducing appetite via central satiety pathways.

What is a typical Liraglutide dose?

Commonly reported ranges are Titration: 0.6 mg → 1.2 mg → 1.8 mg → 2.4 mg → 3.0 mg daily (Saxenda); 0.6 mg → 1.8 mg daily (Victoza). This is research information, not a recommendation — dosing should be individualized under clinical guidance.

What is the half-life of Liraglutide?

Approximately 13 hours (once-daily dosing). This influences how often it is administered.

How do you reconstitute Liraglutide?

A common approach is to add 0.5 ml of bacteriostatic water to a 3 mg vial. Use the reconstitution calculator for exact unit counts.

What are the side effects of Liraglutide?

Nausea (especially during titration); Vomiting; Diarrhea or constipation; Injection-site reactions; Rare: pancreatitis, gallbladder events.

Is Liraglutide FDA approved?

FDA approved. Victoza for type 2 diabetes; Saxenda for chronic weight management.

References

  1. Victoza (liraglutide) — FDA Drugs@FDAU.S. Food and Drug Administration. FDA approval label for type 2 diabetes indication
  2. Saxenda (liraglutide 3 mg) — FDA Drugs@FDAU.S. Food and Drug Administration. FDA approval label for chronic weight management
  3. LEADER cardiovascular outcomes trialPubMed. Landmark CV outcomes trial establishing liraglutide cardiovascular benefit

Sources listed above were used to verify the claims on this page. See our editorial policy for how we source information.

Educational use only. Peptide Protocol is an informational tool. Nothing on this page constitutes medical advice. Many peptides are prescription-only or restricted in your jurisdiction. Always consult a licensed healthcare professional before injecting any compound.