Weight Loss & Metabolic Health
What Is Liraglutide (Saxenda)?
Last reviewed: May 2026 · Haute MD Editorial Team
Liraglutide is a once-daily injectable GLP-1 receptor agonist marketed as Saxenda for weight loss and Victoza for type 2 diabetes. It was the first widely used GLP-1 for weight management and produces average weight loss of 5–10% over 56 weeks. It has been largely superseded by once-weekly semaglutide and tirzepatide but remains useful in specific clinical situations.
How liraglutide works
Liraglutide mimics the gut hormone GLP-1, slowing gastric emptying, signaling satiety to the hypothalamus, and improving insulin secretion. Because it has a shorter half-life than newer agents (~13 hours), it requires daily injection rather than weekly dosing. The mechanism is identical in principle to semaglutide; the practical difference is dosing frequency, magnitude of effect, and cost.
Effectiveness and dosing
In the SCALE trial, patients on Saxenda lost an average of 8% of body weight versus 2.6% on placebo over 56 weeks, with about one-third losing more than 10%. Liraglutide is titrated from 0.6 mg daily up to 3.0 mg over 5 weeks. For diabetes (Victoza), the dose is 1.2–1.8 mg daily. It produces meaningful but smaller weight loss than semaglutide (~15%) or tirzepatide (~20%).
When liraglutide still makes sense
Liraglutide remains useful for patients who do not tolerate weekly dosing well, those who prefer daily titration flexibility, pediatric weight management (Saxenda is FDA-approved for adolescents 12+), and as a step-down option when discontinuing newer agents. It also has more long-term safety data than tirzepatide. Side effect profile mirrors other GLP-1s — nausea is the most common, particularly during titration.
Frequently Asked Questions
Is Saxenda still prescribed?
Yes, particularly for adolescents, patients who prefer daily dosing, or those who do not tolerate weekly agents. Use has declined as semaglutide and tirzepatide have become available.
Can I switch from Saxenda to Ozempic or Mounjaro?
Yes, under physician supervision. Most patients see additional weight loss after switching to a more potent weekly GLP-1 or GIP/GLP-1 agent.
Does insurance cover Saxenda?
Coverage for weight loss is inconsistent. Victoza (for diabetes) is more commonly covered. Cash prices and savings programs help bridge the gap.
How quickly does Saxenda work?
Most patients begin losing weight within 4–8 weeks of reaching effective doses. Maximum effect is typically seen by 24–32 weeks.
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