How Much Weight Loss in the First Month on Wegovy?

Why the first-month number is smaller than the trial headline

The STEP 1 trial, published in the New England Journal of Medicine, reported an average weight reduction of around 15% over 68 weeks at the 2.4mg maintenance dose. That headline is real, but the first month of Wegovy treatment is not spent at 2.4mg. The licensed schedule starts at 0.25mg, a dose designed to let your digestive system adapt before the dose climbs. Progress at that level is gentle. Some people see the scales shift noticeably; others see very little movement at all, especially if nausea has temporarily changed what they can eat. Neither outcome tells you much about how the next six months will go.

The meaningful weight-loss phase begins once a therapeutic dose is reached, usually after several months of titration. Expecting a dramatic first-month result (and feeling disappointed when it doesn't arrive) leads some people to stop early, which is precisely when the medicine hasn't had a fair run. A prescriber who reviews your progress regularly is the right person to interpret what the numbers mean for you specifically.

If you want a fuller picture of how much weight you can lose on Wegovy in the first month as doses increase, the month-by-month Wegovy breakdown covers it in more detail.

What the real cost of the first month includes, and what some listings leave out

Private Wegovy treatment in the UK is priced per pen, per month, and varies between providers. The Eli Lilly list-price increase in September 2025 pushed headline costs for Mounjaro significantly upward, and Novo Nordisk pricing has followed a similar pattern; typical private monthly prices for semaglutide injections now range roughly £149 to £375 depending on dose and provider, as widely reported. Those figures are hedged for a reason: they shift, and the dose you are on changes the cost month to month.

What matters more is what a headline price actually includes. Some providers charge separately for the consultation, the prescription, delivery, and clinical support. Add those up and the apparent bargain shifts considerably. The Wegovy price guide unpacks the real components worth comparing, and the cost breakdown page goes further on what providers typically charge separately.

At nume, one price covers the consultation, the prescription, next-working-day tracked delivery, and aftercare. We are not the cheapest option available, that is a deliberate choice, not an oversight. What you are paying for is clinical rigour: the same GPhC-registered prescriber reviews every order before a pen leaves the pharmacy.

The decision that matters more than the first-month figure

Deciding to start Wegovy is less about predicting your week-four weight and more about three practical questions: am I a clinical candidate, can I access it safely and legally, and does the full cost make sense for my situation?

On eligibility: the licensed threshold for Wegovy is a BMI of 30 or above, or 27 to 29.9 alongside a weight-related condition such as high blood pressure, high cholesterol or type 2 diabetes. NHS England's guidance on weight-management injections sets out the NHS pathway and its criteria, which differ from the private route. A prescriber (not a BMI calculator) makes the final call, because your full medical history shapes that decision.

On access: Wegovy is a prescription-only medicine. The only legal route to it in the UK is through a valid prescription following clinical assessment. You can confirm any online pharmacy is legitimately registered at the GPhC pharmacy register. Sellers offering these pens without a prescription, via social media, or at prices far below the market rate are a serious safety risk, the MHRA has warned repeatedly about counterfeit pens found to contain entirely wrong substances.

If you are curious whether you would qualify, the Wegovy overview covers the full picture, and our weight-loss treatments page sets out what is available privately through nume.

Why 'cheapest' is the wrong thing to optimise for here

For a prescription medicine supplied through a clinical pathway, price is not the measure that keeps you safe. A lower monthly cost means nothing if the pen is counterfeit, the consultation is cursory, or there is no clinical review before your dose increases. Dose titration needs oversight. If side effects become difficult, you need someone to speak to. Getting a pen cheaply with no prescriber contact afterwards is not a saving; it is a gap in the care that makes the medicine work safely.

At nume (at nume) our prescribers are GPhC-registered Independent Prescribers. If you order before 12pm on a working day, your consultation is reviewed and, if you are approved, your treatment is dispatched the same afternoon. It arrives the next working day in plain packaging. That is the service. If you would like to see whether you are suitable, and have your questions answered by a real clinician, the right next step is a consultation, not a price comparison.

You can also read what early Wegovy results actually look like or explore what different people experience in the first month before you decide anything.