Starting a new weight loss treatment comes with plenty of questions. Am I eligible? What do I need to tell my pharmacist? What should I expect in the first few weeks? Having a clear checklist to work through before your first appointment can make the whole process feel much more manageable.
For patients in Trevethin considering Wegovy, this guide walks through everything you need to know and do before beginning treatment, so you can arrive at your consultation feeling prepared and confident.
Ready to take the first step? Contact us at info@mayberrypharmacy.co.uk or book your consultation online today.
Wegovy contains semaglutide, a GLP-1 receptor agonist that works by mimicking a hormone naturally released after eating. It helps reduce appetite, slow gastric emptying, and support more controlled calorie intake over time. It is administered once weekly via a pre-filled injection pen and is licensed in the UK for chronic weight management in eligible adults.
According to the NHS, Wegovy is intended for use alongside a reduced-calorie diet and increased physical activity, and should always be taken under the supervision of a qualified healthcare professional.

Before starting Wegovy, working through the following checklist will help ensure you are prepared for your consultation and that treatment can begin as smoothly as possible.
| ✓ | Checklist Item | Why It Matters |
|---|---|---|
| ☐ | Know your BMI | Wegovy is licensed for adults with a BMI of 30 or above, or 27 or above with a weight-related health condition. Knowing your BMI beforehand helps your pharmacist confirm eligibility quickly. |
| ☐ | List all current medications | Semaglutide can affect the absorption of oral medications. Sharing a full and accurate medication list with your pharmacist allows any interactions to be identified before treatment begins. |
| ☐ | Disclose relevant medical history | Conditions, including a personal or family history of medullary thyroid carcinoma, Multiple Endocrine Neoplasia syndrome type 2, pancreatitis, or serious kidney disease, may affect suitability for Wegovy. |
| ☐ | Confirm you are not pregnant or breastfeeding | Wegovy is not recommended during pregnancy or breastfeeding. Women of childbearing age should also discuss contraception with their prescriber, as effective contraception is advised during treatment. |
| ☐ | Understand the dosing schedule | Wegovy follows a gradual dose escalation over several months. Knowing what to expect helps you stay consistent and reduces the likelihood of stopping treatment early due to side effects. |
| ☐ | Plan your injection day | Choosing a consistent day of the week for your injection from the outset helps build a reliable routine and avoids missed doses. |
| ☐ | Prepare storage space in your fridge | Wegovy should be stored in the refrigerator at 2-8 °C before use. Having a dedicated, clearly labelled space ready avoids any storage confusion when your pen arrives. |
| ☐ | Set realistic expectations | Wegovy produces meaningful results, but weight loss builds gradually. Understanding that the biggest changes typically occur over several months helps patients stay motivated through the early weeks. |
Wegovy follows a step-up dosing schedule designed to support tolerability. Patients begin on a low starter dose and increase gradually over approximately five months until reaching the full maintenance dose.
| Phase | Dose | Duration |
|---|---|---|
| Starter | 0.25 mg | 4 weeks |
| Step 1 | 0.5 mg | 4 weeks |
| Step 2 | 1 mg | 4 weeks |
| Step 3 | 1.7 mg | 4 weeks |
| Maintenance | 2.4 mg | Ongoing (as prescribed) |
Wegovy is a clinically effective treatment, but a number of individual factors influence how well it works and how quickly results are seen.
Wegovy significantly reduces appetite, but the quality of food choices still plays an important role. A balanced, protein-rich diet supports better outcomes and helps preserve lean muscle mass during weight loss.
Taking Wegovy on the same day each week maintains steady medication levels in the body. Missed doses or irregular timing can reduce effectiveness and may increase the likelihood of side effects when resuming.
Regular movement, even at a moderate level, complements the appetite-reducing effects of Wegovy and supports long-term weight maintenance. Patients who combine treatment with consistent activity tend to see stronger results.
Conditions such as hypothyroidism or insulin resistance can affect how the body responds to weight loss treatment. These should be discussed and appropriately managed alongside Wegovy for the best possible results.
Patients who are able to reach and maintain the full 2.4 mg dose tend to experience the strongest results. Your prescriber will guide dose increases based on your individual tolerance and response.
For a broader look at how Wegovy compares to Mounjaro and which may be more appropriate for you, our guide on Mounjaro vs Wegovy covers the key clinical differences between the two treatments.
The early weeks of Wegovy treatment are typically when patients notice the most significant changes in appetite. If you are considering Wegovy, having previously used Mounjaro, or are thinking about making the switch, our guide on switching from Mounjaro to Wegovy covers what to expect from the transition and the key differences between the two treatments.

Yes. Our Trevethin branch offers private Wegovy consultations and prescriptions. Online booking is also available.
No referral is required. You can book directly with our team at Mayberry Pharmacy, and we will carry out a full suitability assessment before any prescription is issued.
Most patients notice a reduction in appetite within the first one to two weeks. Meaningful weight loss typically becomes visible from weeks four to eight onwards, with more significant progress occurring over several months of consistent treatment.
Semaglutide is used in a separate licensed product for type 2 diabetes management. If you have type 2 diabetes and are considering Wegovy for weight management, you must disclose this during your consultation so your prescriber can assess your suitability carefully.
If you miss a dose and your next scheduled injection is more than two days away, take it as soon as possible. If the next injection day is within two days, skip the missed dose and continue with your normal schedule. Never take two doses at once.
Preparing properly before starting weight loss treatment makes a real difference to how confidently and comfortably you progress. Having the right information, the right support, and the right expectations in place from day one gives you the strongest foundation for long-term success.
At Mayberry Pharmacy, we are proud to support patients across South Wales with private Wegovy and Mounjaro prescriptions, expert clinical assessments, and ongoing care throughout treatment. Our branches in Trevethin, Newport, Caerphilly, Crumlin, Blackwood, and Penarth are here to help.
Get in touch at info@mayberrypharmacy.co.uk or book your weight loss consultation online today.