Wegovy Overview

Wegovy is a licensed weight-management medication containing semaglutide, given as a weekly injection. This page covers what it is, its active ingredient, and the standard dosing schedule, including the different milligram levels used as treatment progresses.

Understanding the dosing structure specifically is genuinely useful, since the range of milligram levels involved, and the reason treatment starts low and builds up gradually, often isn't explained clearly elsewhere.

Key things to know

• Wegovy's active ingredient is semaglutide, a GLP-1 receptor agonist.
• It's licensed specifically for weight management, a different licensed indication to Ozempic, which contains the same active ingredient but is licensed for type 2 diabetes.
• Wegovy is given as a once-weekly injection, with the dose increased gradually over several weeks.
• The standard titration schedule moves through 0.25mg, 0.5mg, 1mg and 1.7mg before reaching the 2.4mg maintenance dose.
• A higher 7.2 mg once-weekly dose is also available for eligible adults with obesity who need additional treatment after spending at least four weeks on the 2.4 mg dose. It is not suitable for everyone taking Wegovy.
• Doses are increased gradually specifically to reduce the likelihood and severity of digestive side effects.

What Is Wegovy Weight Loss Treatment?

Wegovy is a prescription-only medicine licensed for weight management that contains semaglutide, a GLP-1 receptor agonist. It is given as a self-administered injection once a week, with treatment started at a low dose and increased gradually, and it is only prescribed after an individual clinical assessment confirms it is appropriate for you.

For adults in the UK who meet clinical criteria for weight management and are considering a prescription treatment, this page explains what Wegovy is, how dosing works, how to use it, possible side effects, key safety and eligibility checks, and how to start treatment through a regulated UK prescribing service.

Wegovy's Active Ingredient: Semaglutide Injection

Semaglutide is also used in other medicines, including Ozempic and Rybelsus. Although these medicines contain the same active ingredient, their licensed uses, formulations and dosing instructions differ. They should not be treated as interchangeable with Wegovy.

Semaglutide is also the active ingredient in other medicines licensed for different purposes, including Ozempic and Rybelsus, both licensed for type 2 diabetes rather than weight management specifically. The active ingredient is the same molecule; what differs between these medicines is the licensed indication, the dosing, and in some cases the formulation.

Wegovy Starting Dose and Milligram Levels

Wegovy treatment usually begins at 0.25 mg once weekly, with the dose increased every four weeks through 0.5 mg, 1 mg and 1.7 mg before reaching the standard 2.4 mg maintenance dose from week 17. Each FlexTouch pen contains four doses of its specified strength.

For eligible adults with obesity, the prescriber may increase the maintenance dose to 7.2 mg once weekly if further treatment is needed, after at least four weeks on 2.4 mg. Depending on the device prescribed, the 7.2 mg dose can be given using a single-dose 7.2 mg pen or three 2.4 mg injections administered one after another on the same day. Follow the instructions for your prescribed pen and never change your dose without medical advice.

Why Doses Are Increased Gradually

Treatment begins at a lower dose to reduce the risk and severity of digestive side effects, which are more common when GLP-1 medicines are started higher immediately. Increasing the dose step by step allows the body to adjust progressively, which is why the schedule isn't simply "how much you take" but a deliberate, clinically designed process.

This is also why staying on the scheduled dose matters, rather than trying to move through the doses more quickly than intended. If a missed dose affects timing close to the next scheduled dose, you may be told to skip the missed dose rather than double up. Your prescriber will only increase your dose once it's appropriate to do so, based on how you're responding to the current dose, within your wider treatment plan and with regular contact with your healthcare provider during Wegovy treatment.

How Wegovy Is Administered

Patients take Wegovy on the same day each week using a Wegovy pen. The injection site should be rotated between suitable areas such as the abdomen, thigh or upper arm. It's designed to be self-administered at home using a pre-filled injection pen, following instructions provided as part of your treatment.

Who Wegovy Is For

In the UK, Wegovy is a prescription medicine used for weight management in eligible adults. Treatment is generally considered for people with a BMI of 30 or higher, or a BMI of 27 to below 30 with at least one weight-related health condition. It may also be prescribed for specific cardiovascular risk-reduction purposes in eligible patients under the relevant UK prescribing guidance. A healthcare professional must assess whether treatment is appropriate for you.

Wegovy Side Effects

Wegovy can cause digestive side effects, including nausea, vomiting, diarrhoea, constipation and abdominal discomfort. These symptoms are often more noticeable when the dose is increased and may improve as the body adjusts.

Seek urgent medical attention if you develop severe, persistent abdominal pain, particularly if it spreads to your back or occurs with vomiting. Discuss persistent or troublesome side effects with your prescriber before increasing or changing your dose.

Starting Treatment in the UK

The online consultation process

Starting Wegovy through an online service involves a medical questionnaire covering your health history, current medicines and weight-management goals, along with an assessment of your BMI. A qualified prescriber will review the information and decide whether treatment is suitable. Be sure to disclose any relevant medical conditions, previous reactions to medicines and personal or family history of serious health conditions.

Pricing

The cost of Wegovy varies by dose and prescribing service. Check the provider's current product page for the latest price, consultation charges and any repeat-prescription costs before ordering.

Safety Considerations

Wegovy should be used under the supervision of a qualified prescriber and alongside a reduced-calorie diet and increased physical activity. Its effects and potential risks vary between individuals, so treatment should be reviewed regularly. Your prescriber can assess whether the medicine is continuing to provide sufficient benefit and whether it remains appropriate for you.

Medical Disclaimer

This content is provided for general information purposes only and does not constitute medical advice. It is not a substitute for a consultation with a qualified healthcare professional. Treatment suitability depends on an individual clinical assessment carried out by a UK-registered prescriber. Results vary between individuals. If you have concerns about your weight or general health, speak to a pharmacist or prescriber.