Side effects with weight loss medications are common, especially when starting treatment or increasing the dose. The good news is that for most people, they are usually mild and temporary, often resolving on their own. Healthy eating habits and taking your medication on the same day each week can help reduce side effects. You may also choose to stay on a lower dose until things improve.
📌 If you experience side effects, follow these steps:
🟡 Mild Side Effects
- Mild nausea (with or without vomiting)
- Constipation or diarrhoea
- Headaches, heartburn, or injection site reactions
Scroll down this page to read advice on managing the specific side effect(s) you're experiencing. If you still need support, you can:
- Speak to our clinical team via contact form or telephone
- Contact your NHS GP or local pharmacist
🔴 Severe Side Effects
- Severe nausea or vomiting with diarrhoea
- Severe abdominal pain or bloating
- Reduced urine output or fluid build-up
- Fast heart rate or vision changes
- Lumps in the neck or hoarse voice
Call your NHS GP or dial NHS 111 for urgent medical support.
🚨 Emergency Situations
If you experience symptoms of a serious allergic reaction (e.g. difficulty breathing, swelling of the face or throat), call 999 immediately.