Wegovy vs Saxenda Side Effects UK | Cured Pharmacy

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Wegovy vs Saxenda Side Effects - Cheapest UK Price £69

Compare Wegovy and Saxenda side effects at the cheapest UK price from £69, plus £20 off with code WEIGHTLOSSNEW.

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Our Pricing

Pricing Disclaimer: Prices on some pages may not be up to date — the live pricing table below and pricing shown during consultation are official current prices and take precedence over any other figures on the site.

Weeks 1–4

2.5mg

1 pen • 4 Weeks

£145 £124.99

£31.25 / Per Week

Your starting dose – designed to help your body adjust gently to treatment

⭐ Future Orders at £145
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Weeks 5–8

5mg

1 pen • 4 Weeks

£179 £159.00

£39.75 / Per Week

First step up – builds on your progress as your body adapts to treatment

⭐ Future Orders at £179
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Weeks 9–12

7.5mg

1 pen • 4 Weeks

£220 £200.00

£50.00 / Per Week

Mid-range dose – for continued progression and enhanced results

⭐ Future Orders at £220
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Weeks 13–16

10mg

1 pen • 4 Weeks

£245 £225.00

£56.25 / Per Week

Higher strength dose – supports significant weight loss progress

⭐ Future Orders at £245
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Weeks 17–20

12.5mg

1 pen • 4 Weeks

£270 £250.00

£62.50 / Per Week

Advanced dose – for patients requiring stronger therapeutic effect

⭐ Future Orders at £270
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Weeks 21+

15mg

1 pen • 4 Weeks

£287 £267.00

£66.75 / Per Week

Maximum dose – the highest available strength for optimal results

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Wegovy (Semaglutide)
Weeks 1–4

0.25mg

1 pen • 4 Weeks

£89 £69.00

£17.25 / Per Week

Your starting dose – eases your body into treatment with minimal side effects

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Wegovy (Semaglutide)
Weeks 5–8

0.5mg

1 pen • 4 Weeks

£99 £79.00

£19.75 / Per Week

First step up – continues building tolerance for long-term success

⭐ Future Orders at £99
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Wegovy (Semaglutide)
Weeks 9–12

1mg

1 pen • 4 Weeks

£119 £99.00

£24.75 / Per Week

Mid-range dose – where most patients start seeing meaningful results

⭐ Future Orders at £119
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Wegovy (Semaglutide)
Weeks 13–16

1.7mg

1 pen • 4 Weeks

£169 £149.00

£37.25 / Per Week

Higher strength – supports accelerated weight loss progress

⭐ Future Orders at £169
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Wegovy (Semaglutide)
Weeks 17+

2.4mg

1 pen • 4 Weeks

£199 £179.00

£44.75 / Per Week

Maximum dose – the highest available strength for optimal weight management

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Wegovy vs Saxenda Side Effects: What UK Clinical Data Shows

Understanding wegovy vs saxenda side effects uk profiles is essential when choosing between these two MHRA-licensed weight loss injections. Both semaglutide (Wegovy) and liraglutide (Saxenda) are GLP-1 receptor agonists with well-documented safety data from large-scale clinical trials, but their side effect frequencies and severity differ significantly. At Cured Pharmacy, our UK-registered clinical team helps patients navigate these differences during their free online consultation.

Most Common Side Effects: Wegovy vs Saxenda UK Data

Gastrointestinal side effects are the most frequently reported adverse events with both medications. In the STEP clinical trial programme for Wegovy, nausea occurred in 44% of participants, diarrhoea in 30%, and vomiting in 24% [1]. The SCALE trials for Saxenda showed similar patterns, with nausea affecting 39% of participants, diarrhoea in 21%, and constipation in 19% [2].

The key difference lies in duration and intensity. Wegovy's once-weekly dosing typically produces side effects that peak within 24-48 hours post-injection and subside before the next dose [1]. Saxenda's daily injection schedule means patients may experience more consistent but often milder gastrointestinal symptoms throughout treatment [2].

Most side effects with both medications are mild to moderate and decrease significantly after the first 8-12 weeks as the body adapts to treatment [1][2]. Our superintendent pharmacist Tarun Kumar (GPhC 2233073) notes that proper dose escalation is critical for minimising these effects—both medications follow structured titration schedules specifically designed to improve tolerability.

Nausea and Vomiting: Comparative Frequency in UK Trials

Nausea represents the most common reason for treatment discontinuation with GLP-1 receptor agonists. In head-to-head comparisons, Wegovy shows a higher initial incidence of nausea (44%) compared to Saxenda (39%), but the severity profile differs [1][2].

Wegovy-related nausea typically occurs within 24-72 hours of injection, peaks during the dose escalation phase, and resolves within 2-3 days in most patients [1]. Saxenda's daily dosing produces more consistent but generally less intense nausea, which patients often describe as persistent mild queasiness rather than acute episodes [2].

Discontinuation rates due to gastrointestinal side effects were 4.3% for Wegovy in STEP trials and 6.2% for Saxenda in SCALE trials, suggesting that whilst Wegovy has higher initial nausea rates, fewer patients ultimately stop treatment because of it [1][2]. Practical management strategies include taking injections before bed, eating smaller meals, and avoiding high-fat foods during the first month of treatment.

Managing Gastrointestinal Side Effects

UK prescribers recommend several evidence-based approaches to minimise nausea with both medications. These include injecting at consistent times (evening for Wegovy to sleep through peak symptoms, morning for Saxenda to avoid bedtime nausea), staying well-hydrated, eating protein-rich meals, and never skipping the gradual dose escalation schedule. If symptoms persist beyond 12 weeks or worsen rather than improve, your prescriber may adjust your dose or consider alternative treatments available at Cured Pharmacy.

Serious Side Effects and Safety Considerations

Both Wegovy and Saxenda carry similar warnings regarding rare but serious adverse events. The MHRA requires monitoring for pancreatitis, gallbladder disease, and thyroid C-cell tumours, though these occur in less than 1% of patients [3][4].

Acute pancreatitis was reported in 0.2% of Wegovy patients and 0.3% of Saxenda patients in clinical trials [1][2]. Symptoms include severe persistent abdominal pain radiating to the back, often accompanied by nausea and vomiting. Both medications are contraindicated in patients with a personal or family history of medullary thyroid carcinoma or Multiple Endocrine Neoplasia syndrome type 2 [3][4].

Hypoglycaemia risk is low with both medications when used alone for weight management, as GLP-1 receptor agonists work in a glucose-dependent manner [1][2]. However, patients taking concurrent diabetes medications may require dose adjustments. All prescription treatments at Cured Pharmacy require clinical assessment by a UK prescriber who will review your full medical history and current medications to identify any contraindications.

Side Effect Wegovy (Semaglutide) Saxenda (Liraglutide) Clinical Significance
Nausea 44% of patients 39% of patients More intense with Wegovy but time-limited weekly
Diarrhoea 30% of patients 21% of patients Higher frequency with once-weekly dosing
Vomiting 24% of patients 13% of patients Significantly higher with semaglutide
Injection site reactions 3.4% of patients 6.8% of patients Lower with weekly vs daily injections
Treatment discontinuation 4.3% (GI side effects) 6.2% (GI side effects) Better tolerability with Wegovy long-term
Trial completion rate 81.6% at 68 weeks 71.8% at 56 weeks Higher adherence with semaglutide

Injection Site Reactions: Wegovy vs Saxenda Side Effects UK

Local injection site reactions occur less frequently than gastrointestinal side effects but remain a consideration for both medications. Wegovy trials reported injection site reactions in 3.4% of participants, whilst Saxenda studies showed a slightly higher rate of 6.8% [1][2].

Saxenda's daily injection schedule inherently increases the total number of injection events, which may explain the higher incidence of localised redness, itching, or mild swelling at injection sites [2]. Wegovy's once-weekly dosing reduces overall injection frequency by approximately 85%, correspondingly lowering the cumulative risk of injection site reactions [1].

Most injection site reactions with both medications are mild, resolve within 24-48 hours, and can be minimised by rotating injection sites systematically between the abdomen, thigh, and upper arm. Persistent or worsening reactions should be reported to your prescriber during follow-up consultations.

Proper Injection Technique

Correct injection technique significantly reduces the risk of site reactions. Both Wegovy and Saxenda should be injected subcutaneously (under the skin, not into muscle) at a 90-degree angle. Allow the medication to reach room temperature before injecting, clean the injection site with an alcohol wipe, and never inject into areas that are tender, bruised, or scarred. Our UK clinical team provides detailed injection training materials with every prescription dispensed from Cured Pharmacy.

Long-Term Tolerability and Treatment Continuation Rates

Treatment adherence data from clinical trials provides insight into real-world tolerability. In the 68-week STEP 1 trial, 81.6% of Wegovy patients completed the full study period [1]. The 56-week SCALE Obesity and Prediabetes trial showed 71.8% of Saxenda patients remained on treatment through completion [2].

The higher continuation rate with Wegovy may reflect its once-weekly convenience factor combined with superior weight loss outcomes (average 14.9% body weight reduction vs 8.0% with Saxenda), which motivates patients to persist through initial side effects [1][2]. However, individual tolerability varies considerably—some patients find Saxenda's daily dosing allows for more precise symptom management.

Long-term safety data spanning up to 2 years shows that most adverse events occur during the dose escalation phase, with new-onset side effects becoming rare after 6 months of stable dosing [3][4]. Both medications have been extensively studied in UK populations and are recommended by NICE for weight management in appropriate patients, subject to prescriber approval.

Which Has Fewer Side Effects: Wegovy or Saxenda?

Neither medication definitively has fewer side effects—the profile depends on individual patient factors and priorities. Wegovy shows higher initial nausea rates (44% vs 39%) but better long-term continuation rates (81.6% vs 71.8%), suggesting patients find the side effects more manageable overall [1][2].

Saxenda's daily dosing may suit patients who prefer consistent, predictable effects and the ability to skip a dose if experiencing symptoms, though this is not recommended without prescriber guidance [2]. Wegovy's once-weekly schedule appeals to those prioritising convenience and willing to manage more intense but time-limited weekly symptoms [1].

At Cured Pharmacy, Wegovy is available from £20 off first order using code WEIGHTLOSSNEW

Starting Your Weight Loss Treatment

Both Wegovy and Saxenda require a structured approach including gradual dose escalation, regular prescriber follow-ups, and lifestyle modifications for optimal results and minimal side effects. Cured Pharmacy's UK-registered clinical team provides ongoing support throughout your treatment journey, with discreet packaging, next-day delivery options, and the lowest prices guaranteed across the UK. Start your free online consultation today—it takes under 3 minutes, and you'll see exact pricing before completing your assessment.

Scientific References

  1. Wilding, J. P. H., Batterham, R. L., Calanna, S., Davies, M., Van Gaal, L. F., Lingvay, I., McGowan, B. M., Rosenstock, J., Tran, M. T. D., Wadden, T. A., Wharton, S., Yokote, K., Zeuthen, N., & Kushner, R. F. (2021). Once-Weekly Semaglutide in Adults with Overweight or Obesity. New England Journal of Medicine, 384(11), 989–1002. https://doi.org/10.1056/NEJMoa2032183
  2. Pi-Sunyer, X., Astrup, A., Fujioka, K., Greenway, F., Halpern, A., Krempf, M., Lau, D. C., le Roux, C. W., Violante Ortiz, R., Jensen, C. B., & Wilding, J. P. (2015). A Randomized, Controlled Trial of 3.0 mg of Liraglutide in Weight Management. New England Journal of Medicine, 373(1), 11–22. https://doi.org/10.1056/NEJMoa1411892
  3. Medicines and Healthcare products Regulatory Agency. (2022). Wegovy 0.25 mg, 0.5 mg, 1 mg, 1.7 mg, 2.4 mg solution for injection in pre-filled pen: Summary of Product Characteristics. GOV.UK. https://www.gov.uk/government/organisations/medicines-and-healthcare-products-regulatory-agency
  4. Medicines and Healthcare products Regulatory Agency. (2020). Saxenda 6 mg/ml solution for injection in pre-filled pen: Summary of Product Characteristics. GOV.UK. https://www.gov.uk/government/organisations/medicines-and-healthcare-products-regulatory-agency

Information on this page is for educational purposes only and is not medical advice. All prescription treatments require clinical assessment by a UK-registered prescriber. Always consult a qualified healthcare professional before starting any new medication. Individual results may vary, and side effects can differ between patients. If you experience severe or persistent side effects, contact your prescriber or seek immediate medical attention.

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Faq

What are the most common wegovy vs saxenda side effects uk patients experience?
Both medications most commonly cause gastrointestinal side effects including nausea (44% Wegovy, 39% Saxenda), diarrhoea (30% Wegovy, 21% Saxenda), and vomiting (24% Wegovy, 13% Saxenda). These typically decrease significantly after the first 8-12 weeks of treatment.
Which causes worse nausea—Wegovy or Saxenda?
Wegovy shows higher initial nausea rates (44% vs 39%), but symptoms are typically more intense for 24-48 hours post-injection then subside, whereas Saxenda's daily dosing produces milder but more consistent nausea throughout the week.
Do wegovy side effects uk patients report differ from Saxenda side effects?
The side effect types are similar (both are GLP-1 receptor agonists), but Wegovy shows higher rates of nausea and vomiting whilst Saxenda has more injection site reactions due to daily dosing. Long-term continuation rates are higher with Wegovy (81.6% vs 71.8%).
How long do side effects last with Wegovy vs Saxenda?
Most side effects with both medications peak during the first 8-12 weeks of dose escalation and decrease substantially thereafter. Wegovy's side effects typically occur within 24-72 hours of injection and resolve before the next weekly dose, whilst Saxenda's daily dosing creates more consistent symptom patterns.
Are there serious side effects with Wegovy or Saxenda?
Both carry similar warnings for rare serious events including pancreatitis (0.2-0.3% of patients), gallbladder disease, and thyroid concerns. Both are contraindicated in patients with personal or family history of medullary thyroid carcinoma and require prescriber monitoring throughout treatment.
Can I switch from Saxenda to Wegovy if I have side effects?
Switching between GLP-1 medications is possible under prescriber supervision, though both share similar side effect profiles. Your UK prescriber at Cured Pharmacy will assess whether switching is appropriate based on your specific symptoms, treatment response, and medical history during your consultation.
Which has better tolerability—Wegovy or Saxenda?
Clinical trial completion rates suggest Wegovy has better long-term tolerability (81.6% vs 71.8% completion), despite higher initial nausea rates. However, individual tolerability varies—some patients prefer Saxenda's daily dosing for more predictable symptom management.
How much is Wegovy at Cured Pharmacy?
Wegovy is available from £79.00 at Cured Pharmacy with transparent upfront pricing shown before your free online consultation. All prescription medications require clinical assessment by a UK-registered prescriber, and final pricing depends on your prescribed dose and treatment plan.
Which has worse side effects - Wegovy or Saxenda?
Both Wegovy and Saxenda share similar side effects like nausea, vomiting, and diarrhoea, but Wegovy is often better tolerated due to its once-weekly injection versus Saxenda's daily dose. Cured Pharmacy provides full side effect guidance during your online consultation to help you choose the right option.
Can I switch from Saxenda to Wegovy if side effects are too much?
Yes, many patients switch from Saxenda to Wegovy to reduce injection frequency and potentially improve side effect tolerance. Cured Pharmacy's UK-registered prescribers can assess your suitability for switching and provide a seamless transition plan with ongoing support.
Are Wegovy side effects worse at higher doses compared to Saxenda?
Wegovy's gradual dose escalation from 0.25mg helps minimise side effects as you reach higher strengths, whereas Saxenda's maximum 3mg daily dose can cause persistent nausea for some users. Cured Pharmacy's prescribers tailor your dose progression to reduce side effects and maximise weight loss results.
How long do Wegovy vs Saxenda side effects last in the UK?
Most side effects from both Wegovy and Saxenda improve within 4-6 weeks as your body adjusts to the medication. Cured Pharmacy provides ongoing clinical support throughout your treatment to manage any persistent or troublesome side effects effectively.
Is Wegovy safer than Saxenda for long-term use in the UK?
Both Wegovy and Saxenda are MHRA-approved and safe for long-term use when prescribed appropriately, though Wegovy's once-weekly dosing may improve adherence and reduce gastrointestinal side effects over time. Cured Pharmacy offers regular medication reviews to ensure your treatment remains safe and effective throughout your weight loss journey.
Tarun Kumar, Prescribing Pharmacist

Medically reviewed by

Tarun Kumar, Prescribing Pharmacist (GPhC 2233073)

Last reviewed: 17 July 2026