- Wegovy® for weight management
- How to Wegovy® through DoktorABC
- What is Wegovy®?
- What is the active ingredient in Wegovy®?
- Who is Wegovy® suitable for?
- Available dosages and dose escalation
- Can I change my dose?
- What should I do if I use too much Wegovy®?
- How is Wegovy® used?
- Where should Wegovy® be injected?
- How to get the best results with Wegovy®
- When should Wegovy® not be used?
- Possible side effects of Wegovy®
- Serious side effects
- Other side effects
- Expert perspective
- Ingredients and manufacturer
Wegovy® for weight management
Wegovy® is a prescription-only medication used to support long-term weight management in adults, alongside dietary changes and increased physical activity. It is supplied as a pre-filled pen and contains the active ingredient semaglutide.
Semaglutide belongs to a class of medicines known as GLP-1 receptor agonists, which mimic the naturally occurring gut hormone involved in appetite regulation and feelings of fullness.
Wegovy® is administered once a week as a subcutaneous injection. Each pen contains 4 doses. Treatment begins as a low dose, and is gradually increased over several weeks until the recommended maintenance dose is reached. This helps improve tolerability and reduce the likelihood of side effects.
How to Wegovy® through DoktorABC
To access Wegovy®, you need to complete an online questionnaire. A UK-registered prescriber will review your answers and if necessary conduct an online assessment. If Wegovy® is considered appropriate, a prescription will be issued.
Important information
DoktorABC UK is a digital health platform that connects patients with independent, UK-registered prescribers . DoktorABC UK does not itself provide medical care, issue prescriptions or dispense medicines. All clinical decisions are made by the UK-registered prescriber following an individual medical assessment.
What is Wegovy®?
Wegovy® is a prescription-only medicine authorized by the MHRA (Medicines and Healthcare products Regulatory Agency) for weight-management for adults in the UK. Its active ingredient, semaglutide, acts on appetite-regulating centres in the brain, helping to increase feelings of fullness and reduce hunger.
What is the active ingredient in Wegovy®?
The active ingredient in Wegovy® is semaglutide, which is structurally similar to GLP-1 (glucagon-like peptide-1) - a hormone naturally released by the gut after eating. It targets receptors involved in appetite regulation and energy intake supporting a reduction in overall calorie intake.
Who is Wegovy® suitable for?
Wegovy® is intended for adults aged 18 years and over who meet one of the following criteria:
- A body mass index (BMI) of 30 or above A BMI of 27 to 29.9who also have at least one weight-related health condition
In clinical studies, adults who are overweight or obese and are treated with a 2.4mg dose of semaglutide once a week alongside lifestyle changes achieved significantly significant weight loss compared with placebo, including those with type 2 diabetes. These results are provided for informational context only, and do not represent expected or guaranteed outcomes for individual patients.
Available dosages and dose escalation
Wegovy® must be used under medical supervision alongside a structured diet and physical activity programme, maintained throughout treatment.
| Treatment phase | Weekly dose |
|---|---|
| Weeks 1–4 | 0.25 mg |
| Weeks 5–8 | 0.5 mg |
| Weeks 9–12 | 1 mg |
| Weeks 13–16 | 1.7 mg |
| From week 17 onwards | 2.4 mg (maintenance) |
If you experience significant side effects such as persistent nausea or vomiting, speak to your UK-registered prescriber, they may recommend slowing the dose escalation or temporarily reducing your dose.
Can I change my dose?
Dose changes should always be made in consultation with your UK-registered prescriber - do not adjust the dose on your own. Following the prescribed schedule is important to ensure safe and effective use of Wegovy®.
What should I do if I use too much?
If you think you may have taken more than your prescribed dose, seek medical advice promptly. Taking too much may increase the risk of side effects such as nausea, vomiting, or diarrhoea, which can lead to dehydration.
How is Wegovy® used?
Wegovy® is injected once weekly as a subcutaneous injection, at any time of day, regardless of meals. . It is recommended to inject on the same day each week to help establish a routine. Injection needles are supplied with the pre-filled pens and do not need to be purchased separately.
Where should Wegovy® be injected?
Wegovy® is given as a subcutaneous injection into the abdomen, thigh, or upper arm. Injection sites should be rotated to avoid skin irritation. Wegovy® should not be injected into a vein or muscle. Full instructions for self-injection are included in the patient information leaflet supplied with your medicine and should be read carefully before use.
How to get the best results with Wegovy®
Wegovy® is most effective when combined with long-term lifestyle changes. A balanced, calorie-controlled diet and regular physical activity are central to effective weight management, and your UK-registered prescriber or dietician can help you develop a plan that works for you.
Clinical studies indicate that semaglutide is more effective at reducing body weight than placebo and some alternative treatments when used alongside lifestyle interventions. These findings are provided for informational context only and do not represent expected or guaranteed outcomes for individual patients.
Good to know: If treatment with Wegovy® is discontinued, its effects on appetite and weight regulation will not persist. Maintaining the lifestyle changes made during treatment is important for supporting long-term weight management.
As with any long-term treatment, research into the extended use of semaglutide, including the effects of stopping treatment, is ongoing.
When should Wegovy® not be used?
Wegovy® should not be used if you are allergic to semaglutide or any other ingredient listed in the patient information leaflet. It may also not be suitable for people who:
- Are currently taking other weight loss medications.
- Have type 1 diabetes.
- Have severely impaired kidney or liver function.
- Have severe heart failure.
Possible side effects of Wegovy®
Like all medicines, Wegovy® can cause side effects, although not everyone experiences them.
Serious side effects
Common (up to 1 in 10 people):
Worsening of diabetic retinopathy in people with diabetes. Seek medical advice if you notice changes in your vision.
Uncommon (up to 1 in 100 people):
Acute pancreatitis, which may present as severe and persistent abdominal pain that spreads to the back. Seek medical attention immediately if you experience these symptoms.
Rare (up to 1 in 1,000 people):
Severe allergic reactions may include difficulty breathing, swelling, dizziness, rapid heartbeat or loss of consciousness. These require urgent medical attention.
Other side effects
Very common (more than 1 in 10 people):
- Headache
- Nausea
- Vomiting
- Diarrhoea
- Constipation
- Abdominal pain
- Fatigue or weakness
Common (up to 1 in 10 people):
- Dizziness
- Indigestion
- Belching
- Flatulence
- Bloating
- Inflammation of the stomach lining
- Acid reflux or heartburn
- Gallstones
- Hair thinning or hair loss
- Injection site reactions
- Low blood sugar in people with type 2 diabetes
Uncommon (up to 1 in 100 people):
- Low blood pressure
- Dizziness when standing up
- Palpitations
- Increased pancreatic enzymes
- Delayed gastric emptying
If you have diabetes, your UK-registered prescriber can advise you on recognising and managing symptoms of low blood sugar.
Good to know: In people without diabetes, the risk of clinically significant low blood sugar is generally low when using Wegovy® alone.
Expert perspective
Semaglutide works by mimicking a naturally occurring gut hormone that influences appetite and feelings of fullness. Its effect on appetite regulation is considered central to its role in weight management. Gastrointestinal side effects are thought to be related to slowed stomach emptying and the way the medicine acts on appetite signals in the brain.
Ingredients and manufacturer
Active ingredient
- Semaglutide
Other ingredients
- Disodium phosphate dihydrate
- Propylene glycol
- Phenol
- Hydrochloric acid / sodium hydroxide (for pH adjustment)
- Water for injections
Marketing authorization holder and manufacturer
Novo Nordisk A/S
Bagsværd, Denmark
Frequently asked questions
How do I calculate my BMI?
BMI is calculated by dividing your weight in kilograms by the square of your height in metres.
BMI = weight (kg) / height (m)²
A BMI between 20 and 25 is generally considered within the healthy range, although BMI does not account for all aspects of health.
Will my health insurance cover Wegovy®?
Treatment with Wegovy® is usually self-funded. NHS availability may vary by region and individual circumstances. Check directly with your GP or health insurer for the most up-to-date information.
What results can I expect from Wegovy®?
Weight loss often begins within the first few weeks of treatment, although individual results vary. Sustainable weight loss typically develops over several months and depends on adherence to lifestyle changes alongside medication.
In clinical studies, adults treated with semiglutide achieved an average reduction in body weight of approximately 15% over 68 weeks, compared with placebo. These findings are provided for informational context only and do not represent expected or guaranteed outcomes for individual patients.
Is Wegovy® safe?
Wegovy® has been evaluated in extensive clinical trials. As with all medicines, the potential benefits and risks should be discussed with your UK-registered prescriber before starting treatment.
Can I stop using Wegovy® on my own?
No, Do not stop treatment without consulting your UK-registered prescriber . If you have concerns about your treatment or wish to discontinue treatment, your UK-registered prescriber can advise how to do so safely.
What should I do if I miss a dose?
If you miss a dose, the approach depends on how much time has passed since your scheduled injection day
- If it has been five or fewer, administer the missed dose as soon as you remember, then continue with the next dose on the usual day.
- If it has been more than five days, skip the missed dose and continue on your usual scheduled day.
Do not take a double dose to make up for a missed one.
What alternatives to Wegovy® are available?
Other prescription options for weight management include different injectable treatments and oral medicines. The most suitable choice will depend on your medical history, BMI and lifestyle, and should always be discussed with your UK-registered prescriber.
