£40 Off Best Weight Loss Injections UK - Code FIRST40

  • £40 off your first order with code FIRST40
  • Mounjaro pens from £129.99 after discount
  • Clinical assessment completed within 3 working days
  • Free delivery on all orders across the UK
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Treatment from £144.99

Takes under 2 minutes · 100% online
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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.

Apply Code FIRST40 for Maximum Savings

Code FIRST40 - Your Gateway to Affordable Weight Loss

When you're ready to purchase the best weight loss injection in the UK, code FIRST40 delivers instant savings. This exclusive discount code takes £40 off your first order of Mounjaro, making this prescription-only treatment more accessible. Simply enter FIRST40 at checkout to activate your discount automatically.

Mounjaro Pricing with Code FIRST40

Your discount code transforms our already competitive pricing into exceptional value. Single pen options with FIRST40 applied: 2.5mg starter dose for £129.99 (usually £169.99), 5mg for £159.99 (usually £199.99), and 7.5mg for £209.99 (usually £249.99). For maximum savings, consider our bundle deals designed to support your weight loss journey.

Bundle Deals with Your Discount Code

Smart buyers choose our bundle options to maximise their FIRST40 savings. The Intro Duo (2.5mg + 5mg pens) costs just £299.99 with your code - that's £80 total savings including your discount. The Progress Trio bundle (5mg, 7.5mg, 10mg) becomes £634.99 with FIRST40, providing everything needed for progressive dosing at exceptional value.

How to Apply Code FIRST40

Using your discount code is straightforward. Complete your clinical assessment for Mounjaro treatment, select your preferred pen strength or bundle, proceed to checkout, and enter FIRST40 in the discount code field. Your £40 saving applies immediately, with your new total displayed before payment. This offer is valid for first-time customers only.

Why Mounjaro is the Best Weight Loss Injection UK

Mounjaro (tirzepatide) represents the latest advancement in prescription weight management. This once-weekly injection may help regulate appetite by activating GIP and GLP-1 hormones naturally produced by your body. Clinical studies demonstrate its effectiveness when used alongside a reduced-calorie diet and increased physical activity. Your FIRST40 code makes this innovative treatment affordable from day one.

Fast Clinical Assessment Process

Don't wait to start your transformation. Our streamlined clinical assessment typically completes within 3 working days, or upgrade to express processing for 24-hour approval. Once approved, your Mounjaro ships immediately with free UK delivery. Your FIRST40 discount applies regardless of which assessment speed you choose.

Claim Your FIRST40 Discount Today

Ready to purchase? Your £40 discount expires without notice, so secure your savings today. Start your clinical assessment now, apply code FIRST40 at checkout, and begin your weight loss journey with the UK's most effective prescription injection. Order now and save £40 on your first purchase.

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.

Join the free waitlist
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