Weight Loss Treatments

Weight loss treatment UK guidelines recommend prescription weight loss medications for individuals with a BMI of 30 or higher, or 27 and above if they have weight-related conditions such as diabetes or high blood pressure. A consultation with a healthcare professional will determine if a treatment is suitable.

No, prescription weight loss medications are not appropriate for all individuals. They are generally not recommended for those who are pregnant or breastfeeding, those with a history of certain cancers, pancreatitis, eating disorders, or severe gastrointestinal conditions, or those taking medications that may interact with the treatment. A thorough medical consultation will identify whether treatment is safe and suitable for your specific circumstances.

Prescription weight loss treatments such as Wegovy weight loss injections and Mounjaro weight loss injections are clinically proven to help reduce appetite and support long-term weight loss. These treatments work by regulating hunger hormones, making it easier to maintain a healthy diet and reach your goals.

Side effects vary depending on the medication. GLP-1 treatments such as Mounjaro and Wegovy most commonly cause gastrointestinal effects including nausea, vomiting, diarrhoea, constipation, and stomach discomfort, particularly in the early stages of treatment. These effects often improve as the body adjusts to the medication. Starting on a lower dose and gradually increasing it — as is standard practice with these treatments — helps minimise side effects. More serious side effects are rare but should be discussed with your prescriber.

Results vary significantly between individuals and depend on the medication used, consistency of use, and the lifestyle changes made alongside treatment. Clinical trials for GLP-1 medications have shown average weight loss of between 10% and 22% of body weight over 68 weeks with consistent use and dietary changes. It is important to have realistic expectations — prescription treatments are designed to support sustainable, gradual weight loss rather than rapid results, and work most effectively as part of a broader lifestyle change.

Most people begin to notice a reduction in appetite within the first few weeks of starting treatment, with visible weight loss typically becoming apparent within the first one to three months. The rate of loss tends to be gradual and steady, which is considered the most sustainable and healthy approach. Full results are generally assessed over a period of six to twelve months of consistent treatment.

Yes, prescription weight loss treatments are most effective when combined with meaningful lifestyle changes. A reduced-calorie, balanced diet and regular physical activity are strongly recommended throughout treatment. Medications such as GLP-1 agonists work by reducing appetite and slowing digestion, making it easier to eat less, but the habits built during treatment are important for maintaining weight loss in the long term. Your prescriber may also recommend behavioural support alongside medication.

This depends on the treatment prescribed. Injectable GLP-1 medications such as Mounjaro and Wegovy are administered as a once-weekly subcutaneous injection, typically into the stomach, thigh, or upper arm. The injections are simple to self-administer using a pre-filled pen device and full instructions are provided with your medication. Tablet-based options are taken daily. Your prescriber will advise on the correct dosage schedule for your chosen treatment.

For many people, stopping weight loss medication can result in some weight being regained, particularly if lifestyle changes have not been fully embedded. GLP-1 treatments in particular work by actively suppressing appetite, so when stopped, hunger levels may return to previous levels. This is why building sustainable dietary and exercise habits during treatment is so important. Your prescriber will advise on the most appropriate time to stop treatment and how to manage the transition effectively.

Mounjaro and Wegovy are both injectable GLP-1 based weight loss treatments but work in slightly different ways. Wegovy contains semaglutide, which mimics the GLP-1 hormone to suppress appetite and slow gastric emptying, helping you feel fuller for longer. Mounjaro contains tirzepatide, which targets two hormones — GLP-1 and GIP — making it a dual-action treatment. By targeting both receptors, Mounjaro has shown greater average weight loss in clinical trials, with some participants losing up to 22% of their body weight compared to around 15% with Wegovy. Both are administered as weekly injections and are clinically approved, but the most suitable option depends on your individual health profile and medical history.

You can buy Mounjaro or Wegovy online by selecting your treatment and completing a short health consultation. A licensed prescriber will review your information, and if approved, your medication will be dispensed and delivered discreetly to your door. This ensures that all treatments are safe and appropriate for your needs.

Yes, provided you use a regulated and reputable service. At RX Direct, all orders are reviewed by licensed UK prescribers who assess your suitability based on your consultation responses and medical history. Weight loss medications are prescription-only, meaning they cannot legally be dispensed without prescriber approval — our process ensures this step is never bypassed. All medication is dispensed by a registered UK pharmacy and delivered discreetly to your door.

When you buy weight loss medication online from RX Direct, your order is reviewed by a qualified prescriber before being dispensed. We offer fast UK delivery, including next-day options where available, so you can start your treatment as soon as possible.