GLP-1 medications like Mounjaro (tirzepatide) are transforming how people lose weight — but knowing the right dosage is critical to achieving safe, effective results.
In this guide, we break down how GLP-1 dosing works, how it changes over time, and what you can expect when starting your journey with PPRX.
What Are GLP-1 Receptor Agonists?
GLP-1 (glucagon-like peptide-1) is a naturally occurring hormone that regulates:
- Blood sugar
- Appetite and satiety
- Digestion speed
- Insulin secretion
Medications like tirzepatide (Mounjaro) or semaglutide (Ozempic/Wegovy) mimic this hormone to help you feel fuller for longer, reduce food intake, and improve metabolic health — all leading to weight loss.
Why GLP-1 Dosage Matters
Unlike standard medications, GLP-1 injections follow a gradual titration schedule to:
- Minimise side effects (like nausea or fatigue)
- Help your body adapt to appetite and metabolic changes
- Maximise long-term weight loss safely
Incorrect self-dosing or skipping steps can lead to poor results and increased side effects.
Typical Mounjaro (Tirzepatide) Dosage Schedule
Here’s how the dosage usually progresses:
| Week | Dosage |
|---|---|
| 1–4 | 2.5 mg (starting dose) |
| 5–8 | 5 mg |
| 9–12 | 7.5 mg (if tolerated) |
| 13+ | 10 mg+ (up to 15 mg) |
Each person’s response varies, so dosages may stay at a lower level longer based on tolerability and weight loss goals.
How Dosage Decisions Are Made at PPRX for GLP-1 pens
At PPRX Online Pharmacy, we offer:
- A free consultation form reviewed by our registered pharmacists
- Individual dosing plans based on your BMI, medical history, and goals
- Ongoing access to repeat supplies (upon approval)
Our dosage plans align with the latest MHRA and manufacturer guidelines, and we do not dispense without a pharmacist’s approval.
What Happens If You Increase the Dose Too Quickly?
Rushing your GLP-1 dosage can cause:
- Nausea or vomiting
- Loss of appetite leading to fatigue
- Constipation or digestive issues
That’s why we start low and increase gradually. Our pharmacist-led model ensures you’re monitored at every step.
Get Started with PPRX Today
Whether you’re new to Mounjaro or switching from another GLP-1 medication, PPRX makes access safe, simple, and private.
We provide:
- Licensed pharmacist review
- Next-day UK delivery
- Clear guidance on dosage and titration
- Transparent pricing with no hidden fees
👉 Start Your Tirzepatide Consultation Now
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
