Lamictal may cause serious side effects including: fever, swollen glands, weakness, severe muscle pain, any skin rash, especially with blistering and peeling, painful sores in your mouth or around your eyes, headache, neck stiffness, increased sensitivity to light, nausea, vomiting, confusion, drowsiness, yellowing of the skin or eyes (jaundice. Lamotrigine may cause blurred vision, double vision, clumsiness, unsteadiness, dizziness, or drowsiness. Do not drive or do anything else that could be dangerous until you know how this medicine affects you. More commonly reported side effects of Lamictal include headache, double vision, nausea, skin rash, fever, and dizziness. Some people may experience mild to serious side effects during treatment. Common side effects include nausea, sleepiness, headache, vomiting, trouble with coordination, and rash. [7]. Serious side effects include excessive breakdown of red blood cells, increased risk of suicide, severe skin reaction (Stevens–Johnson syndrome), and allergic reactions, which can be fatal. [7]. Lamictal is an anti-epileptic medication used treat seizures in adults and children over 2 years old. Learn about side effects, interactions and indications. Common yet mild side effects of Lamictal include nausea, vomiting, sleeping issues, and vision problems. Serious side effects include suicidal thoughts, changes in heart rhythm, and aseptic. Do not stop taking lamotrigine or change your dose without talking to your health care provider first. In order for lamotrigine to work properly, it should be taken every day as ordered by your health care provider. Are there specific concerns about lamotrigine and pregnancy? Some Lamictal (lamotrigine) side effects are mild, while others are rare but more serious. Here are 11 side effects to look out for. The most common side effects of lamotrigine are dizziness, drowsiness, tremor, double/blurred vision, headache, trouble with balance and coordination, nausea, or vomiting. Tell your health care. Learn about the side effects of Lamictal (lamotrigine), from common to rare, for consumers and healthcare professionals.