Best Weight Loss Injection - Single Pen Options UK

  • Complete single pen range: 2.5mg to 15mg available
  • First-time buyer discount: Save £40 with code FIRST40
  • Express approval option: 24-hour clinical assessment
  • GPhC-registered pharmacy: Authentic UK prescription supply
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Treatment from £144.99

Takes under 2 minutes · 100% online
Person enjoying the outdoors

Check if you're eligible

Height 175 cm
Weight 82 kg
Your BMI
26.8
Check with prescriber
Start free consultation
Free · BMI thresholds shown are illustrative. Final eligibility is confirmed by a UK prescriber during your free consultation.
100% UK-based pharmacy Free advice & support Rated Excellent 2,400+ reviews
Which route suits you

Two clinically backed paths to results

A weekly GLP-1 injection or a daily capsule — each fully overseen by our UK pharmacy team, with no obligation to continue.

Treatment
Avg. weight loss
05%10%15%20%25%
Availability
Injection
Weekly pen · GLP-1
Avg. weight loss
~20%up to
Availability Available now
Pill NEW
Daily tablet · Oral GLP-1
Avg. weight loss
~17%up to
Availability Explore now
Live Pricing

Our Range

Prices update live and may change. The live table below always takes precedence.
All treatment is subject to a prescriber consultation and clinical approval.

Choose Your Mounjaro Single Pen Strength Today

Complete Single Pen Range - All Strengths Available

When determining which weight loss injection is best for your needs, Mounjaro single pens provide the flexibility to purchase exactly the strength you require. Our complete range covers all MHRA-approved doses, from starter 2.5mg pens at £169.99 (£129.99 first order) through to maximum strength 15mg pens at £318.99 (£278.99 first order). Each pen contains four weekly doses, making single pen purchases ideal for testing tolerance or maintaining stable dosing.

Single Pen Pricing - Transparent UK Costs

Our single pen pricing structure offers exceptional value with first-time buyer discounts across all strengths. The 2.5mg starter pen costs £129.99 for new customers, while the popular 5mg pen is £159.99 first order. Mid-range options include 7.5mg at £209.99 and 10mg at £229.99 first order. Higher strength pens - 12.5mg (£259.99) and 15mg (£278.99) - support advanced treatment phases. Returning customers benefit from £25 ongoing discounts on every order.

Why Choose Single Pen Purchase

Single pen purchases offer maximum flexibility when starting or adjusting your weight management journey. Unlike multi-pen bundles, individual pens allow you to assess tolerance at each dose level before progressing. This approach is particularly valuable for the initial 2.5mg dose, where some users prefer to extend the four-week period before increasing. Single pens also suit patients maintaining stable doses long-term or those requiring specific strengths between bundle options.

Clinical Assessment Process

Every Mounjaro pen requires prescription approval through our clinical assessment process. Standard approval takes three working days, with express 24-hour assessment available as a paid upgrade. Our UK-qualified prescribers evaluate your medical history, current medications, and weight management goals to determine the most appropriate starting dose. The assessment covers contraindications and ensures Mounjaro aligns with your individual health profile.

Authentic UK Pharmacy Supply

All single pens are sourced through our GPhC-registered UK pharmacy, ensuring authentic tirzepatide medication subject to MHRA quality standards. Each pen carries the Black Triangle monitoring symbol, reflecting its status as a newer prescription medicine under additional monitoring. We provide full patient information leaflets and support materials with every order, plus ongoing clinical guidance throughout your treatment.

Order Your Single Pen Today

Ready to start your weight management journey? Select your preferred single pen strength and complete our online clinical assessment. First-time buyers save £40 with code FIRST40, while express approval gets you started within 24 hours. Our discrete packaging and tracked delivery ensure your prescription arrives safely and confidentially.

NEW

GLP-1, now in adaily pill

Meet the daily GLP-1 tablet — needle-free, taken on your schedule, and prescribed by UK pharmacists. Designed for flexibility.

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Track your progress

Your journey,in your pocket

Track Now

Meet the newGLP-1 pill

  • Once-daily tablet · room-temp storage
  • No needles, no fridge
  • Up to ~15–17% in trials
How treatment works

How GLP-1 treatments help

Reduces appetite

Helps you feel fuller, sooner — so portions naturally shrink.

Curbs cravings

Quietens food noise so snacking and cravings ease off.

Slows digestion

Food stays in your stomach longer, steadying hunger between meals.

Steady blood sugar

Supports more stable glucose levels through the day.

Is GLP-1 treatment right for you?

GLP-1 medicines are powerful and prescription-only for good reason. They suit many people very well — and they aren’t appropriate for everyone. Here’s a clear, honest picture before you decide.

You may be suitable

Criteria met
BMI of 30 or higher
BMI of 27+ with weight-related conditions
Struggled to lose weight with diet alone
Ready to pair with lifestyle changes

Speak to us first

Potential risk
Pregnant, trying to conceive, or breastfeeding
History of certain thyroid cancers
Certain pancreatic or digestive conditions
Under the age of 18

Ready to start your journey?

Track your progress

Your journey, in your pocket

Track your journey

Log every dose and watch your progress build.

Download now Free to download — takes a minute to set up. App Store and Google Play

AI Meal Tracking. Built for GLP-1 Appetites.

Point your camera at any meal and in 4–6 seconds it logs the calories, macros, weight, and fullness it expects.

Never miss a dose

A daily nudge keeps you on track.

How it works

Achieve your goals in just a few simple steps.

Step 1

Start Free Consultation

Select safe UK treatments. Quick answers.

Step 2

Review By Our Clinical Team

Our expert team will use your consultation as the basis of our recommendation and communicate with you.

Step 3

Get it delivered fast

We’ll deliver direct to you, as quickly as tomorrow.

Trusted by thousands

Real people, real change

Hannah M.
Lost 2 st 4 lb in a year

“The cravings that used to run my evenings just quietened down. Having a pharmacist to message made it feel safe.”

David O.
Lost 3 st in a year

“Discreet, simple and genuinely supportive. The dose steps were explained clearly every time.”

Priya S.
Lost 1 st 9 lb in a year

“I finally feel like food isn’t the loudest thing in my head. The delivery was always discreet and on time.”

Frequently asked questions