Lamotrigine is a medicine that is used to manage certain types of seizures or bipolar disorder. The most common side effects of lamotrigine are dizziness, drowsiness, tremor, double/blurred. Medscape - Seizure, Lennox-Gastaut syndrome-specific dosing for Lamictal, Lamictal XR (lamotrigine), frequency-based adverse effects, comprehensive interactions, contraindications, pregnancy. Conversion from immediate-release lamotrigine to LAMICTAL XR: The initial dose of LAMICTAL XR should match the total daily dose of the immediate-release lamotrigine. Lamictal XR (Lamotrigine Extended-Release Tablets) may treat, side effects, dosage, drug interactions, warnings, patient labeling, reviews, and related medications including drug comparison and health resources. LAMICTAL XR prescription and dosage information for physicians and health care professionals. Pharmacology, adverse reactions, warnings, and LAMICTAL XRside effects. LAMICTAL XR may cause a serious skin rash that may cause you to be hospitalized or even cause death. There is no way to tell if a mild rash will become more serious. Lamictal XR is an anti-epileptic medication, also called an anticonvulsant. Lamictal XR is used alone or with other medications to treat epileptic seizures in adults and children. This medicine is also used to delay mood episodes in adults with bipolar disorder (manic depression). What is this medication? LAMOTRIGINE (la MOE tri jeen) prevents and controls seizures in people with epilepsy. It works by calming overactive nerves in your body. Advertisement Conversion from immediate-release lamotrigine to LAMICTAL XR: The initial dose of LAMICTAL XR should match the total daily dose of the immediate-release lamotrigine. • For patients being converted from immediate-release lamotrigine to LAMICTAL XR, the initial dose of LAMICTAL XR should match the total daily dose of the immediate-release lamotrigine.