Side effects are common when starting treatment with AEDs. Some may appear soon after starting treatment and pass in a few days or weeks, while others may not appear for a few weeks.

The side effects you may get depend on the medicine you're taking. General common side effects of AEDs include:

• Drowsiness
• A lack of energy
• Agitation
• Headaches
• Uncontrollable shaking (tremor)
• Hair loss or unwanted hair growth
• Swollen gums
• Rashes – contact your GP or specialist if you get a rash, as it might mean you're having a serious reaction to your medicine

Contact your GP or specialist if you experience symptoms similar to being drunk, such as unsteadiness, poor concentration and vomiting. This could mean your dose is too high. For information about the side effects of your medicine, check the information leaflet that comes with it.