Page 4 - Weight Loss

The conversation around weight loss injections in the UK has never been more active. Two names come up more than any others: tirzepatide and semaglutide. You may know them better as Mounjaro and Wegovy or Ozempic, their respective brand names. But understanding what these compounds actually are, how they differ scientifically, and what the clinical evidence shows about their comparative effectiveness is genuinely useful if you are trying to make an informed decision about your own health.

What Is Semaglutide?

Semaglutide is a GLP-1 receptor agonist, a compound that mimics the GLP-1 hormone produced naturally in the gut after eating. It plays a central role in blood sugar regulation by stimulating insulin release, suppressing glucagon, and slowing gastric emptying. Read our explainer on what semaglutide is and how it works.

At the weight management dose of 2.4 mg per week (as found in Wegovy), semaglutide produces

Weight loss medications like Mounjaro and Wegovy are highly effective tools, but they work best as part of a broader lifestyle approach. Exercise is one of the most powerful ways to enhance, sustain, and protect the results you get from injectable weight loss treatment — yet many people are unsure how to approach physical activity while on these medications.

This guide covers what the evidence says about combining weight loss injections with exercise, the best types of activity to focus on, and the practical things worth knowing. You can explore all available weight loss treatments, including Mounjaro and Mysimba, at Pharmacy Planet.

Do You Need to Exercise to Lose Weight on Mounjaro or Wegovy?

No. Clinical trials for both medications included lifestyle guidance but did not mandate exercise. Participants lost significant amounts of weight without prescribed exercise programmes.

That said, people who combine weight

Mounjaro (tirzepatide) is one of the most clinically effective weight loss medications available in the UK today. But starting the medication does not automatically mean the weight falls away at a predictable rate. If you have been taking Mounjaro for a few weeks and the results feel slower than you expected, you are not alone. There are several well-understood reasons why weight loss can stall or start slowly, and most of them are entirely addressable.

This article walks through the most common reasons people do not see the results they expected on Mounjaro, what the evidence actually says about realistic timelines, and the practical steps that can help.

How Mounjaro Works — and Why It Takes Time

Mounjaro is a dual GIP and GLP-1 receptor agonist. It works by mimicking two hormones that regulate appetite, blood sugar, and how your body processes food. In clinical trials — specifically the SURMOUNT programme — participants

Missed a Mounjaro dose? Learn what to do if you miss your injection, how to stay on track with your Mounjaro dosing schedule, and safe recovery steps.

Store Ozempic safely with correct fridge rules, temperature guidance, and shelf life advice to keep your pen effective and suitable for use.

Orlistat works best with the right diet. Explore foods to include and avoid to maximise its weight loss benefits without discomfort.

Oral Wegovy becomes the first oral GLP-1 for weight loss in the US. Understand what this means for weight loss treatment and future availability in the UK.

Wegovy tablets vs Wegovy injections: learn the key differences, how each treatment works, weight loss results, and when Wegovy tablets may be available in the UK.

Compare the Wegovy pill vs Mounjaro for weight loss. Learn how semaglutide tablets and tirzepatide injections work, results, and which treatment may work better.

Learn about Wegovy tablets, the new semaglutide weight loss pill. Find out how it works, possible results, side effects, and when it may be available in the UK.