Wegovy Doses (UK Guide 2026): Full Schedule, Strengths and What to Expect
Wegovy doses follow a structured weekly escalation schedule, starting at a low dose and increasing gradually over several months. Wegovy contains semaglutide, a GLP-1 receptor agonist that affects appetite and digestion. Each dose is measured in milligrams (mg) and taken once per week as a subcutaneous injection. Understanding this schedule before you begin makes the treatment process more predictable and easier to manage.
The dosing schedule in the UK follows the same standard escalation used in clinical trials, with doses ranging from 0.25 mg to 2.4 mg depending on the stage of treatment.
Wegovy doses follow a fixed weekly escalation schedule:
- 0.25 mg once weekly for the first 4 weeks
- Increased every 4 weeks through four dose levels
- Maintenance dose of 2.4 mg weekly from week 17 onwards
- Some patients remain on lower doses depending on tolerability and response
Wegovy Dose Schedule (Full Breakdown)
The Wegovy dose schedule follows a fixed weekly progression across five dose levels:
| Weeks | Dose | Purpose |
|---|---|---|
| 1–4 | 0.25 mg | Introduction |
| 5–8 | 0.5 mg | Adjustment |
| 9–12 | 1 mg | Increasing effect |
| 13–16 | 1.7 mg | Near maintenance |
| 17+ | 2.4 mg | Maintenance |
This Wegovy dosing schedule is standard across the UK and follows the same escalation used in clinical trials. Each step represents a once-weekly injection, taken on the same day each week. The gradual progression is not optional - it is the standard clinical pathway designed to reduce side effects and allow the body to adapt to semaglutide.
Wegovy Doses Explained Simply
Wegovy dosing isn't about finding your personal dose through trial and error. It follows a fixed escalation ladder - the same starting point for almost everyone. This is why the Wegovy dosing schedule looks the same for almost all patients at the start.
The purpose of the early doses isn't to produce weight loss. It's to build tolerance. Appetite suppression and weight loss effects strengthen as the dose increases, with the full therapeutic effect typically reached at the 2.4 mg maintenance level.
Think of the schedule as a runway rather than a guessing process - each step prepares your body for the next.
Why Wegovy Doses Increase Gradually
The step-up approach is clinically necessary. Semaglutide acts on GLP-1 receptors in the gut and brain, and introducing it too quickly causes pronounced nausea and diarrhoea in most patients.
Beginning at 0.25 mg - a sub-therapeutic level not expected to produce significant weight loss - allows the gastrointestinal system to adapt before each subsequent increase. Each four-week window gives the body time to adjust before the next step up.
Do You Have to Reach the Full 2.4 mg Dose?
No. While 2.4 mg is the licensed maintenance dose, reaching it is not mandatory. Many patients achieve meaningful weight loss before the maximum dose and some remain on 1 mg or 1.7 mg long-term under clinical supervision.
If side effects at a given level are difficult to manage, a prescriber may pause escalation or maintain the current dose for longer. Sustainable progress matters more than reaching a specific dose level.
What Dose of Wegovy Works Best?
There is no single "best" Wegovy dose - it depends on the individual. The factors that matter most are:
- Tolerability at each dose level
- Weight loss response over time
- Whether side effects are manageable
Clinical data shows stronger average weight loss outcomes at higher doses, but many patients respond well before reaching 2.4 mg. A lower maintenance dose that is well tolerated consistently will outperform a higher dose that causes persistent side effects.
Wegovy Doses and Weight Loss Results
Appetite suppression often becomes noticeable from around the 0.5 mg stage, though this varies. Meaningful weight loss typically becomes apparent within the first eight to twelve weeks for those who respond well to the weekly Wegovy dose.
Higher doses are associated with stronger average outcomes in clinical trial data, but this is not guaranteed at an individual level. Lifestyle factors - diet, activity, and sleep - remain significant alongside the medication.
Side Effects by Dose Level
Side effects of Wegovy can vary depending on the dose level, and are most common during dose increases. They typically settle within one to two weeks of each step up.
Lower doses (0.25 mg–0.5 mg):
- Mild nausea after injection
- Reduced appetite
- Occasional fatigue or headache
Higher doses (1 mg–2.4 mg):
- More pronounced nausea or vomiting
- Constipation or diarrhoea
- Acid reflux or stomach discomfort
"The dose escalation schedule for Wegovy is carefully designed to balance tolerability with effectiveness. Patients who experience side effects at a particular dose should speak to their prescriber before deciding whether to continue escalating, as slowing the titration is a recognised and reasonable clinical option. Most side effects are transient and tend to improve as the body adjusts." -Alessandro Grenci, Superintendent Pharmacist at Medino.
What Happens If You Miss a Dose?
- Missed dose under 5 days ago: take the missed dose as soon as possible, then resume your usual weekly schedule
- Missed dose 5 or more days ago: skip the missed dose entirely and take your next dose on the regularly scheduled day
Do not take two doses in the same week to compensate for a missed one.
Wegovy Dose Strengths Available in the UK
All five strengths are available as single-use pre-filled injection pens: 0.25 mg, 0.5 mg, 1 mg, 1.7 mg, and 2.4 mg. Each pen delivers one weekly dose and is not reusable.
Wegovy Doses vs Mounjaro Doses (Key Differences)
Wegovy doses and Mounjaro doses follow different escalation structures, reflecting differences in how the medications work. Wegovy (semaglutide) acts on GLP-1 receptors only; Mounjaro (tirzepatide) acts on both GLP-1 and GIP receptors - a dual mechanism associated with greater average weight loss in clinical comparisons.
Mounjaro begins at 2.5 mg and escalates in 2.5 mg increments every four weeks to a maximum of 15 mg. The absolute dose numbers are higher, but this reflects differences in molecular potency rather than a stronger starting effect. Despite these differences, both medications rely on gradual dose increases to improve tolerability over time.
If you're considering treatment, it can help to understand how Wegovy fits within the broader range of GLP-1 weight loss treatments available in the UK before making a decision with your prescriber.
How Prescribers Decide Your Dose
Prescribers use the standard escalation schedule as a baseline but adjust based on individual response. Key factors include tolerability at each level, whether side effects are interfering with daily life, weight loss progress, and any relevant medical history. Clinical judgement takes precedence - a prescriber may pause escalation, delay a step up, or recommend a lower long-term maintenance dose where appropriate.
Frequently Asked Questions
How long does it take to reach the full 2.4 mg Wegovy dose? Following the standard schedule, most patients reach the 2.4 mg maintenance dose at week 17. If escalation is paused due to side effects, this timeline extends accordingly.
Is the Wegovy weekly dose the same for everyone? The starting dose and escalation schedule are the same for all patients. The long-term maintenance dose may differ depending on individual response and clinical assessment.
Can you stay on 1 mg Wegovy? Yes. If 1 mg is producing good results and is well tolerated, a prescriber may recommend remaining at that level rather than continuing to escalate.
Can you increase your Wegovy dose faster? No. The four-week escalation schedule is designed to reduce side effects and should not be accelerated unless advised by a prescriber.
Summary
Wegovy doses follow a five-step escalation from 0.25 mg to 2.4 mg over approximately 16 weeks, increasing every four weeks. The schedule exists to build tolerance, not to delay results. Not all patients need to reach 2.4 mg - many achieve sustained outcomes at lower levels. All five strengths are available in the UK as single-use pre-filled pens. The right dose is the one that balances effectiveness with tolerability over time, guided by a prescriber.
