Treatments
Programme
Results
Experts
Resources
menu-close
WHAT WE TREAT
Weight loss
icon
Menopause
icon
ACCOUNT
Log in
icon
OVERVIEW
Weight loss overview
icon
TREATMENTS
Explore all options
Explore all options
icon
Mounjaro
Mounjaro
Lose up to 23% body weight
icon
Wegovy
Wegovy
Lose up to 21% body weight
icon
Saxenda
Saxenda
Lose up to 10% body weight
icon
Orlos
Orlos
Lose up to 8% body weight
icon
PROGRAMME
How it works
How it works
icon
Coaching
Coaching
icon
App
App
icon
ABOUT
Results
icon
Experts
icon
RESOURCES
Guides & tips
icon
ACCOUNT
Log in
icon
GET IN TOUCH
020 3912 9885
Mon-Fri 9:00-17:30
icon
OUR CLINIC
Menopause overview
icon
Pricing
icon
Clinicians
icon
TREATMENT PLANS
Hormone replacement therapy
icon
Testosterone treatment
icon
Cognitive behavioural therapy
icon
Vaginal treatments
icon
BLOOD TESTS
Women's midlife (MOT) blood test
icon
Monitor HRT blood test
icon
Start testosterone blood test
icon
WHAT WE TREAT
Skincare
New
icon
Perimenopause
icon
Menopause
icon
Sexual health
icon
Weight management
icon
LEARN
Guides
icon
Treatments
icon
ACCOUNT
Log in
icon
SUPPORT
FAQ
icon
Home/Guides & Tips/Weight loss/

Wegovy vs Ozempic

Wegovy vs Ozempic: What’s the difference and which one’s better for weight loss?

Wegovy and Ozempic contain the same active ingredient, so they’re easy to confuse. Here’s what sets them apart.

clinician image

Medically reviewed by

Dr Earim Chaudry (MBBS), Chief Medical Officer

iconPublished 21st August 2025
Table of contents
  • Is Wegovy the same as Ozempic?...
  • Wegovy vs Ozempic: dose and fr...
  • Which is more effective for we...
  • Ozempic vs Wegovy cost
  • Ozempic and Wegovy side effect...
  • Is Ozempic or Wegovy available...
  • Your weight loss journey

Have you ever confused Wegovy for Ozempic, or vice versa? It’s easily done. After all, both are weekly injections that are made from the same active ingredient (semaglutide). And they can both help with weight loss.

Yet Ozempic and Wegovy are licensed as treatments for different conditions. That means they are prescribed and used in their own ways. If you still feel a bit puzzled, don’t worry: we’re here to explain what sets them apart.

Is Wegovy the same as Ozempic?

Here’s the part that tends to mix people up. Ozempic and Wegovy are two separate brand names for the same medicine: semaglutide. Semaglutide works by acting like the natural hunger hormone GLP-1 to make you feel full, so you lose weight (though semaglutide has other potential benefits, too).

But while they are made from the same active ingredient, Ozempic and Wegovy are different products. And they’re meant for different conditions.

Ozempic is licensed as a treatment for type 2 diabetes. Though it’s sometimes used off-label for weight, all the guidance around how it should be taken (including safety and dosing, for example) is geared towards people with type 2 diabetes.

Whereas Wegovy is approved for use as a weight loss treatment. Public debate has added to the confusion. US President Donald Trump recently referred to Ozempic as a “fat pill,” but Ozempic is an injection. If you are thinking of a semaglutide pill, that product is Rybelsus. We explain the facts in Trump calls Ozempic a ‘fat pill’: what it is and does it work?

Discover Wegovy
Struggling to reach your target weight? You’re not alone. Find out about how medications like Wegovy can boost your efforts and get you closer to your health goals.
icon
Science backed programme
icon
Personalised support
icon
Trusted by 100,000 UK customers

Wegovy vs Ozempic: dose and frequency

Ozempic comes in four doses: 0.25mg, 0.5mg, 1mg, and 2mg. Whereas there’s five Wegovy doses for weight loss—0.25mg, 0.5mg, 1mg, 1.7mg, and 2.4mg. And a higher 7.2mg dose is expected later this year. Clinical research found people on this dose lost 20.7% of their body weight on average.

With both medicines, you start on the lowest dose and then gradually move up every four weeks, until you reach your stable dose. This is the strength of the medicine where it has the effect we want it to without causing unmanageable side effects.

FYI: Ozempic and Wegovy are each taken as weekly injections.

Which is more effective for weight loss?

Scientific research shows that higher doses of semaglutide lead to better results. So, because Wegovy is available in higher strengths, that means it’s more effective for weight loss.

Wegovy can also drive better results than Saxenda weight loss injections, (Saxenda contains the ingredient liraglutide). After using Saxenda for over a year, the average loss is 7.4% of starting weight.

Ozempic vs Wegovy cost

If you’re getting your medicine via private prescription, costs can vary per provider.

At Voy, we offer Wegovy as part of a science-backed lifestyle transformation programme. Find out if you’re eligible by taking this short quiz.

Looking to start your weight loss journey?
Take a quick eligibility quiz to explore your options and see how we can support you.

Ozempic and Wegovy side effects

But when it comes to side effects, is Ozempic the same as Wegovy? Mostly, yes. Though certain symptoms might be more common on Wegovy. Again, this is likely because it’s prescribed in higher doses.

Let’s take a look at the most common side effects for both Ozempic and Wegovy weight loss injections:

Wegovy (may affect more than 1 in 10 people)

  • Headache
  • Nausea
  • Vomiting
  • Diarrhoea
  • Constipation
  • Stomach pain
  • Fatigue

Ozempic (may affect more than 1 in 10 people)

  • Nausea
  • Diarrhoea
  • Low blood sugar (when Ozempic is used alongside certain other diabetes medications—check with your provider if you aren’t sure)

Note: Constipation, stomach pain, vomiting, and fatigue are also side effects of Ozempic, but are considered “common” rather than “very common”.

Side effects support at Voy

"If you're using Voy and you experience any side effects, rest assured that our expert clinicians are just a message or phone call away. They can adjust your dose, prescribe medication to ease your symptoms, or simply offer reassurance.

Everyone responds differently to weight loss treatment and we'll help you find what feels right for you."

Phoebe Fox - Weight Loss Specialist Clinician

With either medicine, side effects are usually mild and tend to clear up on their own. Though in rare cases (up to 0.5% of people), both Ozempic and Wegovy can cause pancreatitis, which is when your pancreas becomes inflamed. If you get severe pain in your stomach and back that doesn’t go away, see your provider asap. Pancreatitis may be caused due to rapid weight loss rather than a side effect of the medication itself.

By the way: you might have heard the terms “Ozempic mouth” or “Ozempic face”. These are non-clinical, blanket terms people use to describe different types of oral and facial symptoms, like having a more gaunt appearance, when using weight loss medicines. But these symptoms are caused by rapid weight loss, rather than being official side effects of the medication.

Is Ozempic or Wegovy available in the UK?

Yep, you can get Ozempic and Wegovy in the UK. But because it’s licensed as a treatment for type 2 diabetes, Ozempic isn’t available as a weight loss treatment on the NHS.

It is possible to get Wegovy for weight loss on the NHS, though it can be difficult. For one, you need to be referred to a specialist weight management service. You also need to have existing health problems related to your weight plus a BMI of 35 or above (though if you have an Asian, Chinese, Middle Eastern, Black African, or African-Caribbean ethnic background, your BMI can be as low as 27.5).

With the NHS, you'll have a review after taking semaglutide for six months. You'll then usually only carry on taking the medicine if you've lost at least 5% of your body weight. And the NHS can only prescribe semaglutide for obesity for a maximum of two years.

You can get both Ozempic and Wegovy via private prescription, though. At Voy, we offer Wegovy as part of our science-backed programme. Once you’ve reached your target weight, we’ll map out a maintenance plan to help you achieve weight loss that lasts.

At Voy, you can:

  • Stay on treatment as long as your BMI remains above 19.
  • Take a break and restart if your BMI is above 22. You don’t need to return to your starting weight to access support.
  • Take things at your own pace to make sure you feel confident and in control.

Your weight loss journey

Curious about trying weight loss medication such as Wegovy? At Voy, you’ll get monthly medication plus one-to-one support from our team of clinicians and coaches as part of our weight loss programme. We’ll work with you to transform your lifestyle—and will be there to cheer you on at every step.

Take our quiz to see if you’re eligible, it’ll only take a few minutes.

FAQ

FAQs about Ozempic vs Wegovy

Dr Earim Chaudry, MBBS
DisclaimerAt Voy, we ensure that everything you read in our blog is medically reviewed and approved. However, the information provided is not meant to replace professional medical advice, diagnosis, or treatment. It should not be relied upon for specific medical advice.
References
icon¹

Davies, Melanie, et al. “Semaglutide 2·4 mg Once A Week in Adults with Overweight or Obesity, and Type 2 Diabetes (STEP 2): a Randomised, Double-blind, Double-dummy, Placebo-controlled, Phase 3 trial.” The Lancetscribble-underline, vol. 397, issue 10278, 2021:971-984 https://www.thelancet.com/journals/lancet/article/PIIS0140-6736(21)00213-0/abstract.

icon²

Fatima, Nazeefa, et al. “Efficacy of Different Doses and Forms of the GLP-1 Receptor Agonist Semaglutide in Weight Reduction Among Non-diabetic Obese or Overweight Populations.” Cureusscribble-underline, vol. 16, no. 9, 2024:e68786 https://pmc.ncbi.nlm.nih.gov/articles/PMC11456416/.

icon³

Garvey, W Timothy, et al. “Two-year Effects of Semaglutide in Adults with Overweight or Obesity: the STEP 5 trial,” Nature Medicinescribble-underline, vol. 28, no. 10, 2022:2083-2091 https://www.nature.com/articles/s41591-022-02026-4.

icon⁴

Ghusn, Wissam, et al. “Weight Loss Outcomes Associated with Semaglutide Treatment for Patients with Overweight and Obesity.” JAMA Network Openscribble-underline, vol. 5, no. 9. 2022:e2231982 https://jamanetwork.com/journals/jamanetworkopen/fullarticle/2796491.

icon⁵

“Ozempic: information for the patient.” Electronic Medicines Compendium. scribble-underlinewww.medicines.org.uk/emc/files/pil.9748.pdf. Accessed 18 August 2025.

icon⁶

“Saxenda: Full Prescribing Information.” Food and Drug Administration,scribble-underline 2023 https://www.accessdata.fda.gov/drugsatfda_docs/label/2023/206321s016lbl.pdf. Accessed 19 August 2025.

icon⁷

“Semaglutide for managing overweight and obesity.” National Institute for Health and Care Excellencescribble-underline.(2023). Accessed 18 August 2025. Accessible here

icon⁸

Wegovy: information for the patient.” Electronic Medicines Compendium. scribble-underlinewww.medicines.org.uk/emc/files/pil.13800.pdf. Accessed 18 August 2025.

icon⁹

“Weight management injections.” NHSscribble-underline, https://www.england.nhs.uk/ourwork/prevention/obesity/medicines-for-obesity/weight-management-injections/#semaglutide. Accessed 18 August 2025.

icon¹⁰

Wilding, John P.H., et al. “Once-weekly Semaglutide in Adults with Overweight or Obesity.” The New England Journal of Medicinescribble-underline, vol. 384, no. 11, 2021:989-1002 https://www.nejm.org/doi/full/10.1056/NEJMoa2032183.

Take the first step towards weight loss that lasts.

card-image
Weight Loss
Where to buy retatrutide in the UK
You can’t legally buy retatrutide in the UK and it’s not safe to take just yet. Here’s how black-market sellers are exploiting legal loopholes.
card-image
Weight Loss
Is retatrutide safe?
Retatrutide isn’t approved just yet, but it’s driving impressive results for weight loss in clinical trials. Here’s what we know so far about its safety profile.
card-image
Weight Loss
Retatrutide side effects
Retatrutide isn’t available yet, but here’s what we know about its side effects from clinical trial data.
Have a question?
phone icon
020 3912 9885Monday - Friday 9am - 5pm
support icon
help@joinvoy.comWe aim to reply in 24hrs
email icon
press@joinvoy.comPress & media inquiries
Our services are not intended for use in a medical emergency. If you need urgent medical attention, please call 111 or 999.

Programme

  • How it works
  • Treatments
  • Coaching
  • The Voy App

Voy

  • Medical experts
  • Results

Legal

  • Privacy policy
  • Terms & Conditions
  • Terms of Sale
  • Complaints

Get help

  • Help Centre (FAQ)
facebooktwitterinstagram
Copyright 2025 Voy. All rights reserved.
Pharmacies: Manual PharmacySuperintendent Pharmacist: Vinisha KandaGPhC Registration: 2203475
registered pharmacycqc ratingcpd member