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GLP-1 Decoder

Saxenda (Liraglutide): Uses, Results, Side Effects

Saxenda is a daily injection of liraglutide made by Novo Nordisk, first FDA approved in 2014, for weight loss. List price is $1,349.02 per 5 pens before insurance. In the SCALE Obesity and Prediabetes trial, people lost 7.4% of body weight on average.

Active ingredient
liraglutide
Manufacturer
Novo Nordisk
How it is taken
daily injection
First FDA approval
2014
List price
$1,349.02 per 5 pens
Average weight loss in trials
7.4%
Most common side effect
Nausea 39.3% vs 13.8% on placebo
FDA shortage
On the FDA shortage list
Saxenda: a GLP-1 pen injector

Saxenda at a glance

How long it remains in the body
100%50%25%0%013 h26 h39 h2.2 d2.7 d50%25%12.5%time after the dose

Its half-life is about 13 hours: after 13 h, half is gone, and after five half-lives (2.7 d) about 3% is left

Weight loss in the main trial
Saxenda (SCALE Obesity and Prediabetes)7.4%Placebo3%

In SCALE Obesity and Prediabetes, 56 weeks, participants lost 7.4% of body weight, compared with 3% on placebo.

Sources: FDA label (DailyMed).

Saxenda uses and forms

For Saxenda, the FDA label lists the uses, forms and warnings. The label and your prescriber determine your dose.

Saxenda at a glance
What the label says
Approved useFor adults and children 12 and older (over 60 kg) with obesity, it is for weight loss and keeping weight off long term, with diet and activity.
FormsPrefilled pen
Strengths on the labeldose strengths the pen delivers: 3 mg, 2.4 mg, 1.8 mg, 1.2 mg or 0.6 mg
Boxed warningA boxed warning says rodents developed thyroid C-cell tumors because of it; whether it causes them in people is not known. Do not use it if medullary thyroid cancer (MTC) is in your personal or family history, or if you have MEN 2.
StorageAfter a pen is used the first time, it may stay for 30 days in a fridge or at room temperature

Sources: FDA label (DailyMed).

What the Saxenda trials showed

Main trial results for Saxenda
TrialWho took partLengthGroupAverage weight lossPlacebo
SCALE Obesity and PrediabetesAdults who have obesity or overweight and did not have type 2 diabetes56 weeksLiraglutide 3.0 mg daily7.4%3%

Sources: FDA label (DailyMed).

Saxenda side effects

Each side effect is shown beside placebo (a dummy treatment), based on how often it appeared in the label's trials. Who was studied: adults with obesity, or who are overweight (weight management).

Table 2. Adverse Reactions Occurring in ≥2% among SAXENDA-treated Adult Patients, More Frequently than Placebo
Side effectSaxenda SaxendaPlacebo
Nausea39.3%13.8%
Diarrhea20.9%9.9%
Constipation19.4%8.5%
Vomiting15.7%3.9%
Injection Site Reaction13.9%10.5%
Headache13.6%12.6%

Sources: FDA label (DailyMed).

Label warnings: Hypoglycemia, Heart Rate Increase, Risk of C-cell tumors in the thyroid, Acute Pancreatitis, Acute Gallbladder Disease, Acute Kidney Injury due to Volume Depletion, Severe Gastrointestinal Adverse Reactions, Hypersensitivity Reactions

The label warnings come from the FDA (DailyMed) label.

Saxenda interactions

Saxenda drug interactions stated in the label
Taken withWhat the label says
Oral medicinesThis medicine slows the emptying of your stomach, which may affect how your body absorbs other pills.
Insulin or sulfonylureasWhen people with type 2 diabetes take it alongside insulin or a sulfonylurea, their risk of low blood sugar rises.

Sources: FDA label (DailyMed).

Check a GLP-1 interaction

Saxenda cost and coverage

Saxenda prices, organized by route
How you payPrice
List price before insurance$1,349.02 per 5 pens

November 2026 price check: Novo Nordisk pricing.

Alternatives to Saxenda

Other medicines used for the same purpose as Saxenda
MedicineIngredientHow it is takenShared useTrial weight lossSelf-pay from
Wegovysemaglutideweekly injection or daily tabletweight loss14.9%$149 per month
Zepboundtirzepatideweekly injectionweight loss20.9%$299 per month
Foundayoorforgliprondaily tabletweight loss11.1%$149 per month

Sources: TrumpRx, FDA label (DailyMed) 1 2 3, Eli Lilly.

The Saxenda label and studies

See the complete DailyMed Saxenda label.

Every Saxenda page

Saxenda en español