Semaglutide dosage increase: the decision your prescriber makes with you

How the four-week interval became the standard

The dosing schedule for semaglutide (Wegovy) was not chosen arbitrarily. Clinical trials found that moving up too quickly produced sharply higher rates of nausea, vomiting and diarrhoea, while holding each dose for around a month let the gut adapt and side effects settle. The full Wegovy dose ladder reflects that finding: four weeks at 0.25 mg, then 0.5 mg, 1.0 mg, 1.7 mg and finally 2.4 mg maintenance. If you are eligible for the 7.2 mg pen approved by the MHRA in April 2026, the same stepwise principle applies, with 2.4 mg as the starting point for that higher tier.

Your prescriber considers two things at each step: whether side effects have settled enough to move up, and whether the current dose is working as expected. Neither question can be answered by a schedule alone. The NHS semaglutide medicines page confirms that titration is managed by the prescriber rather than by fixed calendar rules, which is why clinical review at every repeat matters.

One thing worth knowing: the lowest doses are not really therapeutic. Your body is learning the medicine, not yet reaching its full effect. That distinction matters when people feel impatient at 0.25 mg or 0.5 mg. The weight-loss effect tends to build as the dose rises toward maintenance.

Three reasons a prescriber might slow or skip an increase

A dose increase is an active clinical choice, not the default. Prescribers weigh up three broad reasons to pause or delay a step upward.

First, ongoing side effects. If nausea is still disrupting meals or sleep at the current dose, pushing higher is likely to make things worse before they improve. Staying at 1.0 mg for an extra four weeks, for instance, is a routine and sensible call. The side effects that often follow a dose increase are predictable and manageable, but only if the previous level has properly settled.

Second, progress. If someone is losing weight steadily at a lower dose with minimal side effects, there is a reasonable argument for staying there longer rather than increasing for the sake of the schedule. The maximum dose is not always the optimal dose for every person.

Third, practical life: surgery, illness or a period of reduced food intake can affect how the medicine is tolerated. Telling your prescriber about an upcoming procedure is important, NHS England advises informing the anaesthetic team that you are on a GLP-1 medicine before any operation.

If you are trying to work out when the right moment to increase your semaglutide dose is, our guide on how to increase your dose of semaglutide walks through the practical steps your prescriber will consider alongside you.

What actually changes when the dose goes up

A higher dose of semaglutide strengthens appetite suppression and, for most people, slows gastric emptying a little more. In practical terms: food feels filling faster, hunger between meals softens, and cravings can quieten. Some people also notice a temporary return of nausea they thought they had left behind, this typically settles within a week or two of the new dose.

The STEP 1 trial, published in the New England Journal of Medicine, showed around 15% average weight reduction at 2.4 mg over 68 weeks. That outcome was not produced by the first few doses; it accumulated as participants moved up the schedule and spent meaningful time at maintenance. Getting to the right dose is part of how the medicine does its job.

Storage and routine are easy to overlook at a dose change, but they matter. Semaglutide pens need refrigeration at 2–8°C. Many people keep theirs in the fridge door, fine, as long as the pen stays within the temperature range confirmed in the Patient Information Leaflet, which also tells you exactly how long a pen can sit at room temperature if needed. Always check the leaflet for your specific pen, rather than relying on memory.

For more on the options available at each step, the semaglutide dosage overview covers the full schedule in detail.

How dose increases work through a clinical service like nume

Every repeat order at nume is reviewed by a GPhC-registered Independent Prescriber before anything is dispensed. A real clinician reads your answers, not an automated system. That review covers how you have tolerated the current dose, whether a next step is appropriate, and whether any other changes in your health bear on the decision.

There are no automatic renewals. Each time, the prescriber looks at the full picture. This is not bureaucracy for its own sake: it is the mechanism that keeps a dose increase safe rather than just scheduled. If you want to understand how the service is structured, our about page sets out how the pharmacy and prescribing team work together.

Costs for ongoing treatment are covered on the Wegovy price page, which explains what a single transparent price includes at each stage.

If you have questions ahead of a consultation, our FAQs cover the most common ones. When you are ready, speak to our prescribers through a free consultation, same-day clinical review, no waiting list.