Weight loss medication guides

Mounjaro and Wegovy copy hormones your gut releases after eating, which affects appetite, fullness and how quickly food leaves the stomach. This guide explains the mechanism, what the trials showed, and where access stands in Northern Ireland.

5 minute read. Updated 3 November 2026.

Mounjaro and Wegovy are both weekly weight loss injections, but they contain different active ingredients. This guide compares them using the trial evidence, explains the limits of that evidence, and sets out what to discuss with a prescriber.

4 minute read. Updated 3 November 2026.

Mounjaro and Wegovy start at low doses and increase in steps over several weeks or months. This guide sets out the licensed steps, the maintenance doses, the 7.2 mg Wegovy option, and what to do about a missed dose.

4 minute read. Updated 3 November 2026.

Several weight loss tablets are now authorised in the UK, though none is on the NHS for weight loss in Northern Ireland at the time of writing. This guide explains which options are approved, which are still in development, and what to check before buying.

4 minute read. Updated 3 November 2026.

Prescriptions in Northern Ireland are free, but that does not mean weight loss injections are available on the NHS here. This guide explains the phased NHS service the Department of Health has announced, how it compares with the rest of the UK, and what to do next.

5 minute read. Updated 3 November 2026.

Prescription weight loss medicines are being sold illegally online and on social media, and some of the pens are not what they seem. This guide shows how to check a pharmacy or clinic, what a safe prescribing process involves, and where to report a problem.

5 minute read. Updated 3 November 2026.

Most side effects of Mounjaro and Wegovy affect the stomach and bowel, and are usually mild and early on. A few need urgent help, and this guide sets out which ones, the MHRA warnings, and what to do if something does not feel right.

4 minute read. Updated 3 November 2026.

Weight loss medicines work best alongside changes to eating and activity, and a regulated dietitian is one of the clearest sources of that support. This guide explains the titles you will see, what good support looks like, and the questions to ask before you sign up.

4 minute read. Updated 3 November 2026.

Weight loss injections reduce appetite, so what you eat matters more, not less. This guide sets out general, evidence-based advice on protein, fibre, fluids, smaller meals, nausea, alcohol and strength exercise, based on NHS guidance and the medicine's product information.

5 minute read. Updated 3 November 2026.

Many people regain some of the weight they lost after they stop a weight loss injection. This guide looks at what the trials show, what NICE says about stopping, and what to plan with your prescriber before you come off treatment.

4 minute read. Updated 3 November 2026.