Side effects of Lamictal (Lamotrigine) mostly include: Tremors, Dizziness, Tired feeling, Blurred vision, double vision, Loss of coordination, Dry mouth, Mild nausea, Stomach pain, Upset stomach, Changes in your menstrual periods, Back pain, Insomnia, A runny nose, A sore throat If you get any of the following symptoms, visit your doctor as soon as you can: The first sign of any skin rash, no matter how mild, Fever, Swollen glands, Body aches, Flu symptoms, A headache, Neck stiffness, Increased sensitivity to light, Easy bruising or bleeding, Severe tingling, Numbness, Upper stomach pain, Loss of appetite, Dark urine, Chest pain, Irregular heart rhythm, Feeling short of breath, Confusion, Nausea, Vomiting, Swelling, Rapid weight gain, Urinating less than usual or not at all, Pale skin, Shortness of breath, Rapid heart rate, Trouble concentrating, Increased seizures or worsening of your bipolar disorder.
