Mounjaro® Injectable Pen

Mounjaro Weight Loss Injection Pens UK You can purchase Mounjaro weight loss pens through Express Pharmacy’s UK-registered online prescribing service. As the latest and most effective GLP-1 weight loss injection in the UK, Mounjaro surpasses semaglutide-based treatments (Ozempic/Wegovy), helping patients achieve up to 22.5% body weight loss.

Mounjaro Overview

• How it works: Appetite suppression through hormone regulation

• Effectiveness: 16-22.5% body weight loss (dose-dependent)

• Eligibility:

  • BMI ≥30, or

  • BMI ≥27 with weight-related conditions (hypertension, high cholesterol, type 2 diabetes, sleep apnoea)

• Side effects: Fatigue, dizziness, nausea (typically temporary)

• Dosage:

  • Start: 2.5mg weekly

  • Titration: Increase by 2.5mg monthly

  • Maintenance: Up to 15mg weekly

What Is Mounjaro?

Mounjaro is a UK-licensed weight loss injection containing tirzepatide (a trademark of Eli Lilly). Clinical trials demonstrate up to 22.5% body weight loss – the highest efficacy among GLP-1 medications.

Key features:

• Administered weekly via subcutaneous injection

• Marketed as Zepbound in the US

• Suitable for patients with BMI ≥30 or BMI ≥27 with comorbidities

• [Download the Patient Information Leaflet for injection instructions]

How Mounjaro Works

Mounjaro mimics natural gut hormones (GLP-1/GIP) to:

1. Regulate appetite, reducing food cravings

2. Enhance satiety, promoting longer fullness between meals These dual actions create sustainable calorie reduction for significant weight loss. For optimal results, combine with a reduced-calorie diet.

[Discover the science behind Mounjaro in our detailed guide]

Is Mounjaro Right for You?

Consider Mounjaro if:

• Traditional weight loss methods (diet/exercise) haven’t succeeded

• You meet BMI eligibility criteria

• You have weight-related conditions like:

  • Type 2 diabetes

  • Hypertension

  • Obstructive sleep apnoea

  • High cholesterol

Effectiveness

• 15mg dose: Up to 22.5% body weight loss

• 10mg dose: ~21% average loss

• Lower doses (2.5mg/5mg): Primarily for tolerance building Always titrate gradually to maximize results and minimize side effects.

Dosage Schedule

Consult your clinician if side effects occur during titration. [See our dosage maintenance guide]

Side Effects

Most common (usually subside within days):

• Nausea, vomiting, diarrhoea, constipation

• Fatigue, dizziness

• Injection site reactions (redness, pain)

Safety note:

• Gradual dose titration minimizes side effects

• Serious risks like pancreatitis require immediate medical attention [Full side effect management guide]

Alternatives to Mounjaro

Lifestyle-first approach:

• NHS 12-week weight loss plans

• Diet/exercise programmes

Other GLP-1 medications:

• Wegovy (semaglutide)

• Saxenda (liraglutide – daily injections)

Non-injectable options:

• Orlistat (oral fat-absorption inhibitor)

[Compare alternatives: Wegovy vs Mounjaro • Ozempic vs Mounjaro]