When starting Mounjaro (tirzepatide) for weight loss, one of the most important factors is understanding the dosing schedule. At PPRX, we provide pharmacist-led guidance on how to begin and increase your dose safely to maximise results.
What Is the Starting Dose for Mounjaro?
Everyone begins with a 2.5mg dose once per week for the first four weeks. This is not intended for weight loss results, but rather to let your body adjust to the medication. It helps minimise common side effects like nausea, tiredness, or digestive changes.
How Does the Dose Increase Over Time?
Mounjaro dosing follows a staged titration plan to ensure tolerance and effectiveness. Most patients follow this standard schedule:
Weeks 1–4: 2.5mg
Weeks 5–8: 5mg
Weeks 9–12: 7.5mg
Weeks 13+: 10mg, 12.5mg, or 15mg based on response
Your dose may increase every 4 weeks depending on how well you’re responding and whether side effects are manageable. Not everyone needs to reach 15mg — many achieve excellent results at 5mg or 10mg with good dietary support.
Where and How Do You Inject Mounjaro?
Mounjaro is injected once a week on the same day, at any time of day. You can inject it into your stomach, thigh, or upper arm. The injection is done with a simple pre-filled pen device provided in your delivery from PPRX. Full instructions are included with every pack, and our pharmacy team is available to support you.
How Do You Know When to Increase the Dose?
At PPRX, your prescription is reviewed after each stage. We only approve dose increases if you’re tolerating the treatment well. If you’re experiencing frequent nausea, dizziness, or other side effects, your pharmacist may advise staying on your current dose longer before increasing.
What If You Miss a Dose?
If you miss a Mounjaro dose, take it as soon as you remember — as long as it’s within 4 days of your scheduled injection. If more than 4 days have passed, skip the missed dose and continue with your next scheduled injection. Do not double dose.
Why Choose PPRX for Mounjaro?
PPRX is a GPhC-registered UK pharmacy offering prescription access to Mounjaro with full medical oversight. We provide a safe online consultation, personalised titration plans, and fast, discreet delivery across the UK. You’ll never be left guessing your dose or wondering if it’s working — our team is here to guide you every step of the way.
👉 Start Your Mounjaro Consultation Now at PPRX

At PPRX UK, we provide:
- Genuine Mounjaro pens, sourced directly from the manufacturer (Eli Lilly)
- Dispensing via a GPhC-registered UK pharmacy
- Professional consultations with UK pharmacists
- Ongoing support, dosage guidance, and repeat supply options
Whether you’re just starting or switching from Ozempic or Wegovy, we’re here to help.

📞 Get in Touch
Visit www.pprx.co.uk or contact us directly to begin your online consultation.
We offer fast, discreet UK-wide delivery and exceptional support throughout your journey.
Mounjaro is a prescription-only medicine. This article is for informational purposes only and does not replace medical advice. Always consult a qualified healthcare provider before starting treatment. nhs

