Wegovy vs. Saxenda for weight loss: key differences

When comparing Wegovy (semaglutide) vs. Saxenda (liraglutide), two major differences stand out: dosing options and effectiveness. Wegovy is available as a weekly injection or a daily tablet, while Saxenda is a daily injection. Both medications can help with weight loss when combined with lifestyle changes like eating habits and exercise, but people tend to lose more weight with Wegovy. 

Keep reading to learn their differences in convenience, effectiveness, cost, and more.

*Terms and restrictions may apply for certain doses. 

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Both Wegovy and Saxenda are prescription medications approved by the US Food and Drug Administration (FDA) for chronic weight management in adults and adolescents, alongside lifestyle changes like a reduced-calorie eating plan and increased physical activity. Wegovy has additional approved uses beyond weight management.

Wegovy is generally more effective for weight loss. 

Research consistently shows that Wegovy leads to greater weight loss than Saxenda, including in the head-to-head STEP 8 trial, where participants taking semaglutide (Wegovy) lost an average of 15.8% of their body weight over 68 weeks, compared to 6.4% with liraglutide (Saxenda). Wegovy users were also more likely to achieve a 10%, 15%, and 20% weight loss.

Other studies show significant results with Wegovy:

• Wegovy injection (doses up to 2.4 mg weekly): average weight loss (in the STEP 8 trial) ~14%–18%

• Wegovy HD (7.2 mg weekly): average weight loss ~19%

• Wegovy pill: average weight loss ~13.6%

Saxenda typically leads to an average weight loss of ~5%–8%, which is still clinically meaningful for many people.

How long does it take to see results on Wegovy vs. Saxenda? 

Most people start to notice early changes within the first 4–8 weeks, though these medications are designed for gradual, sustained weight loss. In the STEP 1 trial, participants taking semaglutide began losing weight within the first four weeks. Because both medications are started at low doses and gradually increased, it may take a few months to reach the full therapeutic effects. 

If you don’t lose at least 4% of your body weight after 16 weeks on Saxenda, your healthcare provider may recommend stopping it, as this is a sign the medication may not work well enough for you.

Both medications are GLP-1 receptor agonists, but the biggest difference is how you take them.

Wegovy

Wegovy is available as a once-weekly subcutaneous injection (prefilled, single-dose pen) or a once-daily oral tablet.

Wegovy injection: Inject under the skin of the abdomen, thigh, or upper arm once weekly on the same day each week, at any time of day.  Rotate the injection site with each dose. The starting dose is 0.25 mg weekly, increasing stepwise to a maintenance dose of 2.4 mg weekly; some people may go up to 7.2 mg (Wegovy HD).

Wegovy pill: Take one tablet by mouth every morning on an empty stomach with up to 4 ounces of plain water, at least 30 minutes before eating or taking other oral medications. Swallow whole. The starting dose is 1.5 mg daily, increasing every 30 days to a maintenance dose of 25 mg daily.

Saxenda

Saxenda is a once-daily subcutaneous injection available as a prefilled, multi-dose pen.

Saxenda: Inject under the skin of the abdomen, upper thigh, or upper arm once daily at any time of day. Rotate the injection site with each dose. The starting dose is 0.6 mg daily, increasing by 0.6 mg weekly over five weeks to a maintenance dose of 3 mg daily.

Because both Wegovy and Saxenda are GLP-1 receptor agonists and work the same way in the body, they share many of the same common side effects, most of which are gastrointestinal in nature.

Wegovy may be easier to tolerate for many people. In the STEP 8 trial, overall rates of adverse events were similar between the two medications, but far fewer people stopped taking Wegovy due to side effects (3.2% vs. 12.6% with Saxenda).

Wegovy side effects and risks 

Common side effects of Wegovy include:

• Nausea

• Diarrhea

• Vomiting

• Constipation

• Abdominal pain

• Headache

• Fatigue

Wegovy carries a boxed warning for thyroid tumors based on animal studies. Other risks include pancreatitis, gallbladder disease, kidney problems, and low blood sugar. Additional side effects are possible.

Saxenda side effects and risks  

Common side effects of Saxenda include: 

• Nausea 

• Vomiting 

• Diarrhea

• Constipation

• Headache

• Fatigue

Serious side effects:

Saxenda also carries a boxed warning for thyroid tumors. Additional risks include pancreatitis, gallbladder disease, increased heart rate, and low blood sugar. This isn’t a full list of side effects.

Both Wegovy and Saxenda have the same list price of $1,349.02 per month, but what you pay depends on insurance coverage and the pharmacy you use. A generic version of Saxenda (liraglutide) is now available, which may lower the costs for some people. Check with your pharmacy for current availability.

Wegovy

Wegovy’s list price is $1,349.02 per month. Most people pay less than the list price.

Insurance coverage: Insurance coverage for GLP-1s varies widely, and many plans require prior authorization or specific eligibility criteria. For example, some plans only cover Wegovy if your prescriber submits documentation to show you’ve been diagnosed with heart problems or MASH.

Medicare Part D coverage: Medicare Part D doesn’t cover weight loss medications, but it does cover GLP-1s, such as Ozempic (semaglutide), for managing type 2 diabetes. The Centers for Medicare & Medicaid Services (CMS) will launch the GLP-1 BALANCE program in mid-2026. The program will expand access to these medications, including Wegovy, with eligible Medicare beneficiaries paying $50 per month.

How to save:

• On Ro: If prescribed, Ro Body members can get the Wegovy pill for the cash-pay price of $149–$299 per month, depending on dose, or the Wegovy pen for $199–$349 per month, depending on dose. (Drug costs are in addition to the Ro Body membership fee of $39 for the first month, then $74 per month with a prepaid annual plan.) 

• With insurance: Some commercially insured people may pay as little as $25 per month for Wegovy with the manufacturer’s savings programs. Restrictions apply.

• Pharmacy discount cards: Services like GoodRx or SingleCare may reduce out-of-pocket costs, though they cannot be combined with insurance.

Saxenda

Saxenda’s list price is $1,349.02 per month for a 30-day supply.

Insurance coverage: Coverage varies widely, and some plans may cover Saxenda or its generic version, liraglutide. Many plans require prior authorization or documentation of BMI and failed lifestyle modifications before approving coverage. 

Medicare Part D coverage: Medicare Part D typically does not cover medications prescribed for weight loss. Notably, the CMS Balance program does not list Saxenda as an included medication. (The program is set to include Foundayo, Mounjaro, Ozempic, Rybelsus, Wegovy, and Zepbound for eligible Medicare beneficiaries.)

How to save: 

• Generic liraglutide: Costs vary by dose, pharmacy, and location. The GoodRx price range is $372–$1,239 per month for a 3 mg daily dose.

• With insurance: Teva offers a savings card for eligible commercially insured people, who may pay as little as $20 per month for generic liraglutide.

• Pharmacy discount cards: Services like GoodRx or SingleCare can reduce out-of-pocket costs regardless of insurance status. 

Yes, you can switch between Wegovy and Saxenda under the guidance of a healthcare provider. Both are GLP-1 receptor agonists, and clinical evidence supports switching within this class when necessary. For example, switching may be appropriate if you experience side effects, cost barriers, drug shortages, or inadequate weight loss. 

When switching, a healthcare provider will typically stop the current medication and start the new one at the lowest dose.

Consider Wegovy if:

• You want greater weight loss (based on clinical trial results, but individual results may vary)

• You prefer a once-weekly injection or once-daily oral tablet

• You have cardiovascular disease and want added risk reduction benefits 

• You have MASH (i.e., fatty liver disease) 

Consider Saxenda if: 

• You want a potentially lower-cost option with generic liraglutide, although Wegovy savings offers are competitive

• You want to reach a maintenance dosage faster — within 5–8 weeks on Saxenda vs. Wegovy’s longer dose escalation schedule of three months for the pill or 17–20+ weeks for the injection

• You are aiming to lose a smaller or moderate amount of weight

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A healthcare provider can help determine the right weight loss plan for you. Here’s what to keep in mind when considering Wegovy and Saxenda:

• Wegovy generally leads to more weight loss, but Saxenda remains an effective alternative.

• The biggest practical difference is dosing. Unlike Wegovy, Saxenda requires daily injections (no Saxenda pill, weekly, or high-dose options available).

• Side effects are similar for both and are mainly gastrointestinal.

• Cost, insurance coverage, and personal preference often determine which option is a better fit.