Tirzepatide vs semaglutide: how the two injections differ
How Mounjaro (tirzepatide) and Wegovy (semaglutide) compare on trial results, side effects and eligibility — with an interactive BMI checker.
A once-weekly injection that works on the appetite-regulating gut hormone GLP-1. Below: how it works, who it’s licensed for, and how our pharmacist-led programme keeps it safe — every patient assessed in person or by video before any treatment, in line with GPhC February 2025 guidance on the safe supply of weight-loss medicines.
Pay at checkout · fully refunded if not approved · Personal pharmacist review
Wegovy is the brand name for semaglutide, a once-weekly injectable medicine that acts on the GLP-1 gut hormone receptor. It is licensed in the UK for chronic weight management alongside diet and physical activity in adults who meet specific clinical criteria.
Wegovy is not a quick fix and is not appropriate for everyone. It is used as part of a longer-term, clinically supervised programme — not a short-term aesthetic treatment.
Tap a dose to preview the pen · the pharmacist sets your dose at consultation
from £25/wk · £100 per pen · 4-dose pen
Eligibility is decided by the pharmacist at consultation. As a guide, current UK clinical criteria typically require:
This list is not exhaustive. The pharmacist will review your full medical history and current medications during your consultation.
Based on clinical trial data
See the average result from the largest Wegovy trial for your starting weight. Your pharmacist confirms what’s suitable for you at consultation — there’s nothing to work out first.
Pharmacist-led care
Drag to your starting weight to see the average result from the largest Wegovy trial.
*Based on mean body-weight loss of around 14.9% at 68 weeks in the STEP 1 trial (semaglutide 2.4 mg). Individual results vary significantly. Prescription-only medicine — supplied only after a clinical consultation confirms it’s suitable for you.
Important: the calculators above do not approve or reject you, and the figures are indicative. Eligibility and final pricing are decided by our pharmacist after a full video consultation including BMI verification, medical-history review, and current medications check.
How it works
Message us on WhatsApp, call, or pop in. Tell us you're interested in a Wegovy consultation and we'll explain the next step.
~10 minutesAn in-person or video consultation with our pharmacist. We verify your identity, measure or confirm height and weight, and review your medical history.
Usually within 1 working dayIf treatment is clinically appropriate, the pharmacist issues a prescription under our Patient Group Direction. If it isn't, we'll explain why and discuss alternatives.
Same consultationRegular review consultations to monitor progress, side effects, and dose adjustments. You stay in contact with the same pharmacy team throughout.
As your dose adjustsWho reviews your case
Every consultation at Hyde Park Pharmacy is reviewed personally by our prescribing pharmacist. We've served the Leeds community from Woodsley Road for years, and we treat online care with the same standard as the counter. If treatment isn't right for you, we'll tell you — and refund you in full.
Pricing is confirmed at consultation and depends on the dose and treatment length the pharmacist recommends. Wegovy is supplied in escalating doses — typically starting at 0.25 mg per week and increasing under clinical guidance.
We will explain the full cost (medicine + dispensing + follow-up consultations) before any payment is taken. There is no charge for the initial consultation if treatment is not clinically appropriate for you.
Be cautious of websites offering Wegovy at very low prices without an in-person or video consultation, identity verification, or measured BMI. The MHRA has warned about counterfeit GLP-1 injections in circulation. All medicine supplied by Hyde Park Pharmacy is sourced through licensed UK wholesalers.
Most side effects are mild and gastrointestinal — they tend to improve as your body adjusts. The most common are:
Less common but more serious side effects (severe abdominal pain, signs of pancreatitis, allergic reactions, vision changes if you have diabetes) require urgent medical attention. We will give you a full information leaflet and emergency guidance at your consultation.
Your safety comes first
Common questions
No. Hyde Park Pharmacy can prescribe Wegovy under a Patient Group Direction (PGD) after a clinical consultation, provided the pharmacist judges treatment is appropriate for you.
No. Wegovy is a prescription-only medicine (POM). A pharmacist must consult with you, verify your identity and measure (or confirm) your BMI before any supply.
Either is acceptable. Many patients prefer to come into the pharmacy for the initial consultation, but a video consultation is available where appropriate. Identity and weight verification still apply on video — we will explain how this works when you book.
No. Following GPhC February 2025 guidance on the safe supply of high-risk medicines, an in-person or video consultation is required for Wegovy. Self-reported weight on a form is not enough.
Wegovy is a long-term medicine. Some patients use it for many months or longer; others use it for a shorter period as part of a broader plan. The pharmacist will discuss expected duration at consultation.
Tell us at consultation. Switching between GLP-1 medicines needs careful dose management. We won't supply Wegovy if you're already getting another GLP-1 elsewhere unless we are coordinating the change properly.
Local delivery in LS-postcodes is available. Nationwide delivery may be possible depending on the medicine, dose, and dispatch availability — confirmed at consultation.
No automatic approvals. No pressure. A real prescribing pharmacist reviews your case, and you're refunded in full if it's not suitable.
Continue with Wegovy 0.25 mg →GPhC-registered · Video review included · Confidential · Refunded if not approved
Prefer to talk first? Call 0113 244 1551
Pharmacist-reviewed reading
Pharmacist-reviewed explainers to help you understand your options before you book a consultation.
How Mounjaro (tirzepatide) and Wegovy (semaglutide) compare on trial results, side effects and eligibility — with an interactive BMI checker.
A pharmacist's plain-English guide to the UK's prescription weight-loss medicines — Mounjaro, Wegovy, Saxenda, Mysimba and Orlistat — and how the consultation works.
Hyde Park Pharmacy is a registered NHS community pharmacy regulated by the General Pharmaceutical Council (GPhC).
This page provides information about a prescription-only medicine. It is not medical advice. Always discuss your full medical history with a qualified healthcare professional before starting any new treatment. If you experience side effects, report them via the MHRA Yellow Card scheme at yellowcard.mhra.gov.uk.