REGULATORYRFK Jr.: 14 peptides returning to Category 1 — FDA advisory committee July 2026TRENDINGHexarelin: ↑↑ Surging ��� Trends score 100 as of May 2026UPDATESemaglutide and tirzepatide compounding ended — shortage resolved Feb/May 2025REGULATORYBPC-157, TB-500, thymosin alpha-1, CJC-1295, ipamorelin: expected Category 1 reclassification pendingEVENTpep-talk con ��� First US Peptide Convention · August 2026 · Anaheim CAFDAFDA advisory committee meetings scheduled: late July 2026REGULATORYRFK Jr.: 14 peptides returning to Category 1 — FDA advisory committee July 2026TRENDINGHexarelin: ↑↑ Surging ��� Trends score 100 as of May 2026UPDATESemaglutide and tirzepatide compounding ended — shortage resolved Feb/May 2025REGULATORYBPC-157, TB-500, thymosin alpha-1, CJC-1295, ipamorelin: expected Category 1 reclassification pendingEVENTpep-talk con ��� First US Peptide Convention · August 2026 · Anaheim CAFDAFDA advisory committee meetings scheduled: late July 2026

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Peptide Library

FDA-Regulated Compound

This compound is FDA-approved or regulated. Purchasing without a valid prescription may violate federal law. Verify all legal requirements in your jurisdiction.

Liraglutide

Victoza / Saxenda

Weight Loss & Metabolic

Liraglutide is a GLP-1 receptor agonist developed by Novo Nordisk, sharing 97% homology with native human GLP-1. It is FDA-approved as Victoza for type 2 diabetes management and as Saxenda for chronic weight management. As a once-daily injection, it was the first long-acting GLP-1 analog to achieve widespread clinical use and served as the predecessor to semaglutide.

Mechanism of Action

GLP-1 receptor agonist with 97% homology to native GLP-1. Enhances glucose-dependent insulin secretion, suppresses glucagon, slows gastric emptying.

Research Protocols

For research purposes only. Not medical advice.

Weight management protocols use up to 3.0mg daily with weekly 0.6mg dose escalation.

Research Notes

Clinical Research Status

Liraglutide holds full FDA approval for two indications: type 2 diabetes (Victoza, approved 2010) and obesity (Saxenda, approved 2014). The LEADER cardiovascular outcomes trial demonstrated a 13% reduction in major adverse cardiovascular events. It remains widely prescribed though newer weekly agents are increasingly preferred.

Key Published Findings

The SCALE trials demonstrated 5-8% mean body weight loss versus placebo across multiple populations. Liraglutide has been shown to reduce HbA1c by 1.0-1.5% in type 2 diabetes, with additional benefits in beta-cell preservation. Post-marketing data from over a decade of use provides one of the most robust safety databases among GLP-1 agonists.

Safety Profile

The most common adverse effects are gastrointestinal: nausea, vomiting, and diarrhea, typically diminishing over 4-8 weeks of dose titration. A boxed warning exists for medullary thyroid carcinoma risk based on rodent studies, though human epidemiological data has not confirmed this risk. Pancreatitis cases have been reported rarely, and the drug is contraindicated in patients with personal or family history of MTC.

Comparison to Related Compounds

Compared to semaglutide, liraglutide requires daily rather than weekly injection and produces less weight loss (approximately 5-8% vs 15-17% body weight). It has a shorter half-life of 13 hours versus semaglutide's 7-day half-life, resulting in lower steady-state exposure. However, its longer track record provides greater long-term safety confidence for some clinicians.

Community Observations

Many users report that liraglutide's daily dosing allows more flexible appetite control timing compared to weekly injectables. The gradual dose titration schedule (0.6mg to 3.0mg over 4-5 weeks for obesity) helps mitigate GI side effects. Some practitioners still prefer it for patients who want the option to pause treatment quickly due to its shorter duration of action.

Half-Life

~13 hours

Reconstitution

Pre-filled pen (no reconstitution)

Storage

Lyophilized

Refrigerate 2-8C before first use.

Reconstituted

Room temperature or refrigerate. Use within 30 days.

US Legal Status

FDA-approved (Rx only)

Also Known As

VictozaSaxenda

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