GUIDES

GLP-1 Weight-Loss Injection Guide

Sourced guides on Mounjaro®, Ozempic®, Wegovy® and Zepbound®: weekly dose tracking, managing side effects and nutrition.

★ FEATURED STARTER GUIDE

What are weight-loss injections?

What are weight-loss injections, how do they work and which medicines are there? The differences between Mounjaro, Ozempic, Wegovy and Saxenda, how they are used and what to watch out for.

Medicine Guides6 min read

What Is Retatrutide? Phase 3 Trials, the FDA Approval Process and Safety Warnings

What is retatrutide (GIP/GLP-1/glucagon), the triple hormone agonist developed by Eli Lilly? NEJM Phase 2 results, the TRIUMPH Phase 3 programme, where FDA approval stands and firm safety warnings.

Use & Dosing5 min read

What to Look for in a Weight-Loss Injection Tracker App (2026)

If you use Mounjaro, Ozempic or Wegovy, which features should you look for in a tracker app? A checklist for rotation, reminders, doctor reports, privacy and price.

Nutrition & Lifestyle4 min read

Eating while on treatment

How should you eat while using weight-loss injections? A portion routine that reduces nausea, protein needs, fluid intake and dealing with constipation.

Effects & Side Effects4 min read

What happens when you stop?

What happens when you stop weight-loss injections: does the weight come back, does your appetite return? What is known about stopping the medicine and what to watch out for.

Effects & Side Effects4 min read

When does it start working?

When do weight-loss injections start working, what do you feel in the first week, and when does weight change show? The difference between the effect on appetite and the change in weight.

Use & Dosing4 min read

How do you use the pen?

How to use a weight-loss injection pen: preparation, attaching the needle, injecting and afterwards. The difference between pens and vials, and common mistakes.

Use & Dosing4 min read

How should weight-loss injections be stored?

At what temperature should weight-loss injections be kept in the fridge, how long do they last at room temperature and how should you carry them when travelling? Storage conditions for Mounjaro, Ozempic and Wegovy.

Use & Dosing4 min read

What happens when the dose goes up?

What happens when your dose goes up? Why titration is done gradually, why side effects come back and how long they last. Dose steps in GLP-1 treatment.

Use & Dosing4 min read

Injection sites and rotation

Where are weight-loss injections given: abdomen, thigh, upper arm. Why is site rotation needed, and what happens if you inject into the same spot again?

Use & Dosing4 min read

Which day should you have your weight-loss injection?

Which day should you have your weekly weight-loss injection, can you change the day, and what should you do if you miss a dose? The rules in the product information for Mounjaro and Ozempic.

Effects & Side Effects4 min read

Weight-loss injection side effects

Weight-loss injection side effects: nausea, constipation, diarrhoea, tiredness. Which symptoms are temporary, and which mean you should contact a doctor straight away? The known risks of GLP-1 medicines.

Medicine Guides4 min read

Weight-loss injection names

Weight-loss injection names and active ingredients: Mounjaro, Zepbound, Ozempic, Wegovy, Saxenda, Trulicity, Rybelsus. Which are weekly, which are daily, and how do they differ?

Medicine Guides4 min read

What are weight-loss injections?

What are weight-loss injections, how do they work and which medicines are there? The differences between Mounjaro, Ozempic, Wegovy and Saxenda, how they are used and what to watch out for.