Maximum dosage: The maximum daily dosage of lamotrigine can vary based on individual factors and the presence of other medications. However, it usually ranges from 200 mg to 400 mg daily, with careful monitoring by a healthcare provider to ensure safety and efficacy. This article describes the dosages of Lamictal, as well as its strengths and how to take it. To learn more about Lamictal, see this in-depth article. Lamotrigine may be taken with or without food or on a full or empty stomach. However, if your doctor tells you to take the medicine a certain way, take it exactly as directed. Detailed Lamotrigine dosage information for adults and children. Includes dosages for Bipolar Disorder, Epilepsy and Lennox-Gastaut Syndrome; plus renal, liver and dialysis adjustments. Detailed dosage guidelines and administration information for Lamictal (lamotrigine). Includes dose adjustments, warnings and precautions. Medscape - Seizure, Lennox-Gastaut syndrome-specific dosing for Lamictal, Lamictal XR (lamotrigine), frequency-based adverse effects, comprehensive interactions, contraindications, pregnancy. Lamotrigine helps manage seizures and symptoms of bipolar 1 disorder. Here are typical lamotrigine dosages for adults, and what to do if you miss a dose.