Side effects by medication

Select a medication to see its side effects, with approximate frequencies from clinical trials and patient information leaflets.

Safety & side effects guides

Safety

GLP-1 Side Effects: What to Expect and How to Manage Them

A comprehensive guide to common and rare side effects, with practical tips for managing symptoms during treatment.

Safety

Mounjaro and the Contraceptive Pill: What You Need to Know

Tirzepatide can reduce the effectiveness of oral contraceptives. Here's what the MHRA recommends.

Safety

Pancreatitis Risk with GLP-1 Medications

What the data shows, symptoms to watch for, and when to seek help.

Safety

GLP-1 and Muscle Loss: How to Protect Your Lean Mass

20–40% of weight lost on GLP-1s can be lean mass. How to minimise this with diet and exercise.

Safety

Are Weight Loss Injections Safe? What the Evidence Says

MHRA-approved, clinically trialled — but what are the real risks, including counterfeit products?

Practical

GLP-1 and Alcohol: Can You Drink on Wegovy or Mounjaro?

How slowed gastric emptying affects alcohol absorption and what to be aware of.

Safety

Weight Loss Injections and Pregnancy: What You Need to Know

When to stop treatment before trying to conceive and what the guidance says.