When you started to take lamotrigine and if you have side effect on that when you gonna feel the side effect and what are the possible side effect?

Drowsiness, rash: the most notorious side effect the lamotrigine is rash. If you develop rash within a week, stop it and call your doctor. all anti-seizure drugs can cause drowsiness, dizziness within a couple of days when starting it. This side effect is not as potentially dangerous and sometimes only requires adjusting dose. All other side effects are rare.