What is liraglutide?
Liraglutide is the first-generation GLP-1 medication that paved the way for today’s blockbusters — a once-daily injection sold as Victoza for type 2 diabetes and Saxenda for weight loss. Novo Nordisk brought it to market in 2010, and it works the same basic way as its successors: mimicking a gut hormone that curbs appetite and steadies blood sugar.
The reason you hear less about it now is simple. Liraglutide is a daily shot with milder results than the weekly drugs that followed, so it’s largely been overtaken by semaglutide and tirzepatide. Its one modern advantage: it’s now available as a lower-cost generic.
Liraglutide brand names & the generic
Liraglutide is sold under two brand names — and, unusually for a GLP-1 drug, as a generic.
| Brand | Approved for | Form | FDA year |
|---|---|---|---|
| Victoza | Type 2 diabetes | Daily injection | 2010 |
| Saxenda | Weight loss | Daily injection | 2014 |
| Generic liraglutide | Type 2 diabetes | Daily injection | 2024 |
That last row is what sets liraglutide apart from the rest of the class: there’s an FDA-approved generic. Neither semaglutide nor tirzepatide has one, and won’t for years. If cost is the deciding factor, generic liraglutide is often the cheapest legitimate GLP-1 you can get.
How does liraglutide work?
Liraglutide mimics GLP-1, a hormone your gut releases after eating. It:
- Quiets appetite signals so you feel full sooner.
- Slows stomach emptying so meals last longer.
- Sharpens insulin response to steady blood sugar.
The mechanism is the same as semaglutide — the difference is duration. Liraglutide clears the body in about a day, which is why it’s injected daily rather than weekly. All of these drugs belong to the GLP-1 class.
How much weight can you lose on liraglutide?
Less than with the newer drugs — that’s the honest headline. In the 56-week SCALE trial, adults with obesity lost an average of about 8% of their body weight on the 3.0 mg dose, versus roughly 2.6% on placebo. That’s meaningful, but it’s about half of what semaglutide (≈15%) and tirzepatide (≈21%) deliver.
~half
of semaglutide/tirzepatide · 56 weeks
across separate trials
| Trial | Dose | Duration | Avg. weight loss | Studied in |
|---|---|---|---|---|
| SCALE Obesity | 3.0 mg | 56 weeks | 8.0% (~18 lb) | Adults with obesity, no diabetes |
| LEAD-2 | 1.8 mg | 26 weeks | ~3% | Type 2 diabetes (A1C was the primary endpoint) |
What are the side effects of liraglutide?
The same GI-heavy profile as the rest of the class, though the daily dosing can make nausea feel more constant during the ramp-up.
Common · usually temporary
- Nausea ~39%
- Diarrhea ~21%
- Constipation ~19%
- Vomiting ~16%
- Low blood sugar (with other diabetes meds) ~23%
- Headache ~14%
Serious · call your provider
- Pancreatitis (severe abdominal pain that won't go away)
- Gallbladder problems, including gallstones
- Kidney injury, usually from dehydration
- Serious allergic reactions
- Low blood sugar — mainly when combined with insulin or sulfonylureas
Liraglutide dosage: how the schedule works
Liraglutide is taken once daily and stepped up weekly. Victoza tops out at 1.8 mg for diabetes; Saxenda goes to 3.0 mg for weight loss. Per the FDA labels:
| Dose | When | Notes |
|---|---|---|
| 0.6 mg | Week 1 | Starting dose — helps your body adjust |
| 1.2 mg | Week 2 | Diabetes step (Victoza) |
| 1.8 mg | Week 3+ | Maintenance dose for diabetes (Victoza) |
| 3.0 mg | Weight management | Full weight-loss dose (Saxenda), reached by weekly 0.6 mg steps |
Liraglutide vs semaglutide and tirzepatide
This is the comparison that matters most, because for most people the real question is “should I use this older drug or a newer one?” The honest answer: choose liraglutide mainly if cost or the generic drives the decision.
| Attribute | Liraglutide | Semaglutide | Tirzepatide |
|---|---|---|---|
| Active ingredient | liraglutide | semaglutide | tirzepatide |
| Sold as | Victoza · Saxenda | Ozempic · Wegovy · Rybelsus | Mounjaro · Zepbound |
| How it’s taken | Daily injection | Weekly injection · Daily pill | Weekly injection |
| FDA-approved for | Type 2 diabetes · Weight loss | Type 2 diabetes · Weight loss | Type 2 diabetes · Weight loss & sleep apnea |
| Avg. weight loss in trials | ~6% | ~15% | ~21% |
| Maker | Novo Nordisk | Novo Nordisk | Eli Lilly |
Liraglutide vs Semaglutide
Both are Novo Nordisk GLP-1 drugs, but semaglutide is weekly and roughly twice as effective; liraglutide is daily, older, and now cheaper as a generic.
Full comparison: Liraglutide vs SemaglutideLiraglutide vs Tirzepatide
Tirzepatide is a far stronger, weekly dual-agonist; liraglutide is the older, milder, daily single-agonist — the main reason to choose it is cost.
Full comparison: Liraglutide vs TirzepatideHow to get liraglutide
Liraglutide is prescription-only, dispensed as Victoza, Saxenda, or generic liraglutide. Three legitimate paths:
1
Through your doctor
Any prescriber can write liraglutide. Bring your insurance details — coverage often requires prior authorization, and your doctor's office handles that paperwork.
2
Through telehealth
Licensed online clinics evaluate you remotely and, if appropriate, prescribe liraglutide or a liraglutide-based program — usually within a few days.
3
Pharmacy + savings
Prescriptions fill at regular pharmacies or the maker's direct program. Check the manufacturer savings card before paying list price.
Telehealth options we've reviewed
All provider reviewsNo legitimate liraglutide without a prescription. Sellers offering it with no medical review are operating outside the law, and counterfeit pens are common — stick to licensed providers and pharmacies. Important safety information
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