Saxenda vs Wegovy UK 2026: Which GLP-1 Is Better for Weight Loss?
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Both Saxenda (liraglutide) and Wegovy (semaglutide) are GLP-1 receptor agonist injections available in the UK for weight management. They work through a similar mechanism but differ significantly in their efficacy, dosing schedule, cost and side effect profiles. This guide gives you the complete comparison so you can make an informed decision with your prescriber.
Disclaimer: This guide provides general information only and is not medical advice. Always consult your prescribing pharmacist or GP before starting, switching or stopping any medication.
Saxenda vs Wegovy: At a Glance
| Feature | Saxenda | Wegovy |
|---|---|---|
| Active ingredient | Liraglutide | Semaglutide |
| Manufacturer | Novo Nordisk | Novo Nordisk |
| Injection frequency | Daily | Weekly |
| Maximum dose | 3.0mg/day | 2.4mg/week |
| Average weight loss (clinical trials) | ~5-7% bodyweight | ~15% bodyweight |
| UK approval | Yes (since 2015) | Yes (since 2023) |
| NHS availability | Limited | Limited (rollout ongoing) |
| Typical private cost (UK, 2026) | From ~45/month | From ~75/month |
See current live prices for Saxenda and Wegovy from GPhC-verified UK pharmacies at MedEazy.
Efficacy: How Much Weight Can You Lose?
Saxenda (Liraglutide)
The SCALE clinical trial programme showed that Saxenda users lost an average of 5-7% of their body weight over 56 weeks (versus 2.2% for placebo), with some patients achieving 10%+ weight loss. Saxenda is a solid, proven option but is considered less potent than the newer GLP-1 agents.
Wegovy (Semaglutide)
The STEP clinical trial programme - particularly STEP 1 - showed Wegovy users losing an average of 14.9% of their body weight over 68 weeks, with many achieving 20%+ weight loss. This is significantly greater than Saxenda and represents some of the most impressive weight loss data ever seen for a non-surgical intervention.
Verdict on Efficacy
Wegovy produces significantly greater weight loss than Saxenda. If maximum efficacy is your priority and you can access Wegovy, it is the stronger option. Saxenda remains appropriate for patients who cannot tolerate weekly semaglutide, need a lower-cost starting point, or have specific medical reasons to prefer daily liraglutide.
Dosing: Daily vs Weekly
Saxenda: Daily Injection
Saxenda is injected once daily, with a 5-week titration from 0.6mg to the 3.0mg maintenance dose. The daily routine suits some patients who prefer consistent, predictable drug levels - there's no pronounced weekly cycle of side effects. However, daily injections require more discipline and some patients find this burdensome long-term.
Wegovy: Weekly Injection
Wegovy is injected once weekly, with a 17-week titration from 0.25mg to 2.4mg. The weekly routine is more convenient for most patients. Side effects tend to peak on or after injection day, then ease during the rest of the week. Many patients find this easier to manage than daily dosing once they're past the initial titration phase.
Verdict on Dosing
Wegovy wins on convenience. Most patients prefer once-weekly dosing once they establish their injection day routine. Saxenda suits patients who specifically prefer a daily routine, or who struggle with the pronounced side effect cycle of weekly injections.
Side Effects: Saxenda vs Wegovy
Both medications share a GLP-1 side effect profile dominated by gastrointestinal symptoms. The key differences:
- Saxenda nausea tends to be more constant but lower intensity, because the drug is present daily at steady levels
- Wegovy nausea can be more intense on injection day, but eases as the week progresses
- Gallbladder issues appear to be somewhat more common with Wegovy/semaglutide than Saxenda/liraglutide
- Cardiovascular benefits are stronger with semaglutide - the SELECT trial showed Wegovy reduces major cardiovascular events in people with cardiovascular disease
For a detailed breakdown, see our Saxenda side effects guide and Wegovy side effects guide.
Cost: Saxenda vs Wegovy UK 2026
Cost is often the deciding factor for UK patients purchasing privately. Saxenda is generally cheaper per month than Wegovy, but Wegovy produces significantly greater results per pound spent when you factor in efficacy.
- Saxenda typically starts from around £45/month from UK online pharmacies for the lower doses
- Wegovy typically starts from around £75/month for the 0.25mg starting dose, rising to £115-£120/month at the maintenance 2.4mg dose
Compare current Saxenda prices at MedEazy or compare current Wegovy prices at MedEazy. All pharmacies listed are GPhC-verified.
Who Should Choose Saxenda?
- Patients for whom Wegovy is contraindicated
- Patients who prefer or need a daily dosing routine
- Patients seeking a lower-cost entry point to GLP-1 treatment
- Patients who previously tried Wegovy or Ozempic and experienced intolerable side effects with semaglutide
- Patients who have already been on Saxenda with good results and do not wish to switch
Who Should Choose Wegovy?
- Patients who want maximum weight loss efficacy from a GLP-1 medication
- Patients who prefer once-weekly dosing for convenience
- Patients with a BMI of 27+ and cardiovascular risk factors (Wegovy has proven CV benefits)
- Patients who have previously tried Saxenda but found the results insufficient
Can I Switch from Saxenda to Wegovy?
Yes - switching from Saxenda to Wegovy is a common step for patients who want to progress to a more potent GLP-1 agent. Because both medications work on the same receptor pathway, there is usually a wash-out period or a careful transition plan. Your prescribing pharmacist or GP can advise on the best approach for switching. See our treatment switching guide for more information.
Frequently Asked Questions
Is Wegovy stronger than Saxenda?
Yes. Clinical trial data shows Wegovy (semaglutide 2.4mg weekly) produces approximately twice the weight loss of Saxenda (liraglutide 3.0mg daily) - around 15% bodyweight vs 5-7%. Wegovy is considered the more potent of the two GLP-1 agents.
Is Saxenda cheaper than Wegovy in the UK?
Generally yes - Saxenda starting doses are typically cheaper than Wegovy at comparable stages, though costs depend on your dose and the pharmacy you use. Compare live prices for both at MedEazy.
Can I take Saxenda and Wegovy together?
No. You should never combine two GLP-1 receptor agonists. Both work on the same pathway and combining them would significantly increase the risk of severe side effects including pancreatitis. Always take one or the other as prescribed.
Which is better for someone who has never tried GLP-1 medication before?
Many prescribers now start patients directly on Wegovy given its superior efficacy data. However, Saxenda may be recommended first if cost is a barrier, if the patient has specific medical considerations, or if the prescriber wants to assess GLP-1 tolerance at a lower potency before progressing.
Does Saxenda or Wegovy cause more hair loss?
Hair loss (telogen effluvium) is primarily driven by the rate and extent of weight loss, not the specific medication. Since Wegovy tends to produce faster and greater weight loss, users may notice more pronounced temporary hair thinning. Both typically resolve with adequate protein intake within 6-12 months.