How Much Do Weight Loss Injections Cost?

Written by: Rightangled Medical Team
Medically reviewed by: Rightangled Clinical Team
Reading time: 10 minutes
Prices last verified: July 2026

Full UK Price Breakdown by Dose

Weight loss injections in the UK cost between £99.99 and £309.99 per month, depending on the medication and the dose you're on. At Rightangled, Wegovy starts from £99.99 a month and Mounjaro from £164.99 a month - with the price increasing as you move up through the dose schedule.

But a monthly headline price only tells you part of the story. Because both medications follow a gradual dose-escalation plan, what you pay in month one is not what you'll pay in month six. This guide breaks down the real cost - dose by dose, month by month, and across a full year - so you can budget properly before you start.

Mounjaro Cost by Dose

Mounjaro (tirzepatide) is the most effective weight loss injection currently available in the UK, with patients on the highest dose losing an average of 22.5% of their body weight over 72 weeks in the SURMOUNT-1 trial. Each pen contains four weekly doses - so one pen is one month of treatment.

Here is the full Mounjaro price list by dose at Rightangled:

A few things worth noticing in this table:

The biggest price jump is between 5mg and 7.5mg (£60 more per month). If 5mg is controlling your appetite well and your weight loss is steady, staying there longer is both clinically valid and significantly cheaper - many people maintain on 5mg or 10mg without ever needing 15mg.

You don't pay maximum price from day one. Your first two months cost £164.99 and £179.99 - the £309.99 figure only applies if and when you reach the top dose.

Wegovy Cost by Dose

Wegovy (semaglutide) is the more budget-friendly of the two leading injections, with an average weight loss of around 15% over 68 weeks in the STEP trials. Like Mounjaro, one pen contains four weekly doses.

Here is the full Wegovy price list by dose at Rightangled:

The pattern here is gentler than Mounjaro's - your first three months all cost under £130, which makes Wegovy the lowest-barrier way to start GLP-1 treatment in the UK.

What a Full Year Actually Costs

This is the section most pricing articles skip - and it's the number that actually matters for your budget. Because both medications titrate upward, here's what 12 months genuinely costs if you follow the standard dose schedule:

Mounjaro - Year 1 (standard titration to 15mg)

Mounjaro - Year 1 (staying on 5mg from month 2)

If 5mg works well for you and your clinician agrees you can maintain there:

That's a difference of nearly £1,200 a year - which is why finding your lowest effective dose matters financially as well as clinically.

Wegovy - Year 1 (standard titration to 2.4mg)

All figures based on Rightangled pricing, July 2026, following standard four-week dose steps. Your clinician may adjust your schedule, which will change these totals.

Cost per 1% of Body Weight Lost - A Smarter Way to Compare

Here's a comparison you won't find on most pricing pages - and it changes how the two medications stack up.

Mounjaro costs more per month, but it also delivers more weight loss. So which is actually better value? If we divide the approximate cost of a full treatment course by the average percentage of body weight lost in trials:

The result is striking: on a cost-per-result basis, the two medications are almost identical. Mounjaro's higher monthly price is offset by its stronger results. Which means the right choice usually comes down to your monthly budget, your response to each medication, and your clinician's advice - not which one is "cheaper," because per kilo lost, they essentially aren't.

For someone weighing 100kg, that works out to roughly £210-£220 per kilogram lost on either medication - a useful benchmark when weighing the investment against gym memberships, meal plans, or programmes you may have tried before.

What's Included in the Price (and What Isn't)

One of the easiest ways to be misled on weight loss injection pricing is hidden extras. Here's exactly what your monthly price at Rightangled includes:

Included at no extra cost:

• The medication itself (one pen = four weekly doses)

• Injection needles - included in the box

• Free online consultation with a GMC-registered clinician

• Same-day prescription review in most cases

• Discreet, temperature-controlled packaging

• Ongoing clinical support and dose reviews throughout treatment

• Flexible subscription - pause, change, or restart anytime

Worth budgeting for separately:

• A sharps bin for safe needle disposal (a small one-off cost - available from pharmacies or your local council)

• Your time commitment to diet and activity changes, which the medication works alongside - not instead of

Some providers charge separate consultation fees, prescription fees, or delivery fees on top of the medication price. When comparing prices across pharmacies, always check whether the headline figure is the all-in cost.

Weight Loss Pills - The Needle-Free Alternative

Injections aren't the only option anymore. Rightangled also offers GLP-1 weight loss pills - the same proven appetite-regulating science in a once-daily tablet, with no injection pen and no fridge storage required.

In the OASIS 4 Phase 3 trial published in the New England Journal of Medicine, 76% of people taking the oral GLP-1 tablet lost at least 5% of their body weight, and 47% lost 15% or more over 64 weeks. If needles are the reason you've been hesitating, the tablet route removes that barrier entirely - you can start your assessment here and pricing is confirmed during your consultation.

Can You Get Weight Loss Injections on the NHS?

Yes - but access is limited, and this is why most people currently pay privately.

Mounjaro became available through the NHS in 2025, and Wegovy has been available via NHS specialist weight management services since 2023. However, NHS eligibility criteria are stricter than the private licence: you'll typically need a higher BMI threshold plus weight-related health conditions, a referral to a specialist weight management service, and - in many areas - a place on a waiting list that can stretch to months or longer.

The private route through a regulated online pharmacy like Rightangled means: eligibility from BMI 30 (or 27 with a weight-related condition), a consultation reviewed the same day in most cases, and medication delivered next day. For many people, the deciding factor isn't just cost - it's time.

How to Avoid Overpaying (or Worse, Buying Fakes)

The surge in demand for weight loss injections has created a serious counterfeit problem. Fake Mounjaro and Wegovy pens - sold through social media, unregulated websites, and beauty salons - have been seized across the UK, and some have caused hospitalisations.

Here's how to protect yourself:

Only buy from a regulated pharmacy. Check for GPhC registration (Rightangled's partner pharmacy registration: 9011933 - verifiable on thee GPhC register), CQC registration, and LegitScript certification.

A consultation is a good sign, not an inconvenience. These are prescription-only medicines. Any site selling them without a clinical assessment is breaking the law and likely selling counterfeits.

Be suspicious of prices that look too good. Genuine Mounjaro and Wegovy have wholesale costs that make deep discounting impossible. If a "pharmacy" is selling Mounjaro 15mg for £150, it isn't Mounjaro.

Check the price includes everything. Some sites advertise low medication prices, then add consultation fees, prescription fees, and delivery at checkout.

FAQs

How much does Mounjaro cost per month in the UK?

At Rightangled, Mounjaro costs from £164.99 per month for the 2.5mg starting dose, rising to £309.99 per month for the 15mg maximum dose. Most people spend their first months at the lower price points as they move through the dose schedule.

How much does Wegovy cost per month in the UK?

Wegovy costs from £99.99 per month for the 0.25mg starting dose at Rightangled, rising to £229.99 for the standard 2.4mg maintenance dose and £249.99 for the 7.2mg dose.

Which is cheaper - Mounjaro or Wegovy?

Wegovy is cheaper month to month at every stage. However, Mounjaro produces greater average weight loss, and on a cost-per-percentage-of-body-weight-lost basis, the two are almost identical (~£217-£219 per 1% lost). The better choice depends on your budget, goals, and clinical suitability.

Do I have to reach the highest dose?

No. Many people maintain on lower doses - Mounjaro 5mg or 10mg, or Wegovy at doses below 2.4mg - if their appetite is controlled and weight is stable. The lowest effective dose is both the clinical goal and the cheapest path. Your clinician will guide this.

Are needles and consultations included in the price?

At Rightangled, yes - needles come in the box, and the online consultation, same-day clinician review, and ongoing support are all included in the monthly price. You'll only need a sharps bin separately.

Is it cheaper to get weight loss injections on the NHS?

NHS prescriptions cost the standard prescription charge, so yes - if you qualify. But NHS eligibility criteria are stricter, require specialist referral, and waiting lists in many areas are long. Most people using these medications in the UK currently access them privately.

How do I start?

Complete Rightangled's free 2-3 minute online consultation. A GMC-registered clinician reviews your answers - usually the same day - and if you're eligible, your medication ships with next-day delivery. Explore all options on our weight loss collection.

🏷️ Limited-Time Offer: MOMENTUM10

Get 10% off your weight loss treatment with code MOMENTUM10 at checkout.

Applies to Mounjaro and Wegovy orders at Rightangled. Offer ends 31st July 2026 - start your free 2-minute consultation today to lock in your discount.

Shop Mounjaro ·Shop Wegovy ·Explore Weight Loss Pills

Prices correct as of July 2026 and subject to change. This article is for informational purposes only and does not constitute medical advice. Weight loss injections are prescription-only medicines requiring clinical assessment. Individual results vary; trial figures reflect averages alongside diet and lifestyle changes.