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 splits by brand exactly the way semaglutide does: one molecule, two products, different doses and different approved uses.
| Product | Approved for | Form | Maintenance dose |
|---|---|---|---|
| Saxenda | Chronic weight management, adults and ages 12+ over 60 kg | Daily injection | 3 mg |
| Victoza | Type 2 diabetes | Daily injection | lower than Saxenda’s |
| Generic liraglutide | See the product’s own labeling | Daily injection | varies |
Two things worth being straight about here.
Generic liraglutide exists, and that is genuinely unusual in this class. No generic semaglutide or tirzepatide is approved. What we cannot yet tell you is what it costs or exactly which indications each generic carries, because our pricing evidence does not cover liraglutide at all. That is a gap we have flagged rather than filled.
Victoza sits outside our current evidence scope. We cover Saxenda in depth because its label is in our evidence base; Victoza’s is not. So this page states Victoza’s role, that it is the type 2 diabetes product at a lower dose, without quoting figures we have not verified against its label. Its cardiovascular outcome results belong to Victoza and do not transfer to Saxenda, which has no cardiovascular indication.
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.
Receptors it activates
Single agonist · GLP-1
- GLP-1
Curbs appetite and triggers insulin after meals
- GIP
Not activated
- glucagon
Not activated
How much weight can you lose on liraglutide?
Less than with the newer drugs, and that is the honest headline. In the pivotal 56-week trial in adults with obesity or overweight plus a comorbidity, weight fell 7.4 percent on average against 3.0 percent on placebo, a difference of 4.5 percentage points. About 62 percent of people lost at least 5 percent of their body weight, and 34 percent lost more than 10 percent. In people who also had type 2 diabetes the figure was 5.4 percent.
| Trial | Dose | Duration | Avg. weight loss | Studied in |
|---|---|---|---|---|
| Saxenda Study 1 | 3 mg daily | 56 weeks | 7.4% (~17 lb) | Adults with obesity or overweight plus a comorbidity, no diabetes |
| Saxenda Study 2 | 3 mg daily | 56 weeks | 5.4% | Adults with obesity and type 2 diabetes |
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
Who should not take liraglutide?
Liraglutide suits most adults who need it, but two conditions make it a hard no, and several more are worth flagging to your prescriber first.
Do not take liraglutide if…
- You or a close family member has had medullary thyroid carcinoma (MTC)
- You have Multiple Endocrine Neoplasia syndrome type 2 (MEN 2)
- You've had a serious allergic reaction to liraglutide or any ingredient in Victoza or Saxenda
Talk to your provider first if…
- You've had pancreatitis, gallbladder disease, or gallstones
- You have kidney disease or a history of dehydration
- You take insulin or a sulfonylurea (higher risk of low blood sugar)
- You're pregnant, planning to be, or breastfeeding
- You have type 1 diabetes, which liraglutide is not approved for
The boxed warning drives the first contraindication: a personal or family history of medullary thyroid cancer or MEN 2 rules liraglutide out. Everything in the second column is not a stop sign, just a reason to make sure your provider has the full picture before you start.
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, to let 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 |
How much does liraglutide cost?
We are not publishing liraglutide prices, and the reason is worth stating plainly rather than filling the space with numbers.
Our pricing evidence covers the newer products and carries nothing for liraglutide, under either brand. Separately, generic liraglutide exists, which is unusual in this class and could change the picture substantially, since every other drug here is brand-only. Publishing branded figures without accounting for the generic would likely mislead, and we would rather say so than guess.
What we can describe is how the landscape works. Coverage for obesity treatment is a patchwork: roughly a third of the largest employers cover it, far fewer state Medicaid programs do, and where coverage exists it often carries prior authorization, BMI rules, step therapy, or a lifestyle-program requirement. Medicare’s temporary GLP-1 Bridge does not include either liraglutide product; it covers Wegovy, Zepbound’s KwikPen, and Foundayo.
Two questions worth putting to your pharmacist: whether a generic liraglutide is available to you, and whether the specific product carries the indication you need, since the weight-management and diabetes labels are different products.
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 |
| Receptors targeted | Single: GLP-1 | Single: GLP-1 | Dual: GIP · GLP-1 |
| How it’s taken | Daily injection | Weekly injection · Daily pill | Weekly injection |
| FDA-approved for | Type 2 diabetes · Weight loss | Type 2 diabetes · Weight management | Type 2 diabetes · Weight management & sleep apnea |
| Avg. weight loss in trials | ~7% | ~15% | ~21% |
| List price (before insurance) | – | ~$935–$1,349/mo | ~$1,060–$1,070/mo |
| 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.
Liraglutide vs Tirzepatide
Tirzepatide is a stronger weekly dual agonist; liraglutide is the older, milder, daily single agonist.
How 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, since 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
We're independent: we don't sell medication. Some links may earn us a commission at no cost to you; it never affects what we recommend. Prices change often, so always confirm with the provider.
Liraglutide myths and misconceptions
As the oldest GLP-1 in wide use, liraglutide attracts its own set of misunderstandings. Here’s what’s actually true behind the five we hear most.
Myth Liraglutide is obsolete or unsafe.
It is an older drug, not a discredited one. Liraglutide has years of real-world use behind it, and its own trials were large and placebo-controlled.
Myth The generic version isn't the real drug.
The FDA-approved generic is the exact same molecule as branded Victoza, held to the same standards. It's simply a lower-cost version of liraglutide.
Myth Victoza and Saxenda are two different drugs.
They are the same molecule at different doses under different labels. Victoza is approved for type 2 diabetes; Saxenda is approved for weight management and goes to 3 mg daily.
Myth Daily dosing means liraglutide works by an inferior mechanism.
It uses the same GLP-1 mechanism as the weekly drugs. The difference is duration. Liraglutide lasts about 13 hours against roughly a week for semaglutide, which is why it is taken daily.
Myth Liraglutide is as strong as the weekly GLP-1 drugs.
Its results are more modest, about 7.4 percent weight loss against roughly 15 percent for semaglutide and 21 percent for tirzepatide in their own trials. Those are separate trials rather than head-to-head comparisons, but the gap is large.