Lamotrigine (Lamictal) is used to help control some types of seizures in the treatment of epilepsy.

Take Lamotrigine (Lamictal) exactly as directed.

Check with your doctor if any of these most common side effects persist or become bothersome:

Blurred or double vision; constipation; decreased coordination; diarrhea; dizziness; drowsiness; headache; nausea; painful menstrual periods; runny or stuffy nose; stomach upset or pain; tiredness; trouble sleeping; vomiting; weakness; weight loss.

Seek medical attention right away if any of these severe side effects occur:
Severe allergic reactions (rash; hives; itching; difficulty breathing; tightness in the chest; swelling of the mouth, face, lips, or tongue; unexplained hoarseness); absent menstrual period; calf pain or tenderness; chest pain; dark urine; difficult or painful urination; fast or irregular heartbeat; fever, chills, or persistent sore throat; new or worsening mental or mood changes (eg, anxiety, depression, restlessness, irritability, panic attacks, behavior changes); new or worsening seizures; pale stools; reddened, blistered, swollen, or peeling skin; severe muscle pain or tenderness; severe or persistent stomach pain; shortness of breath; sores in the mouth or around the eyes; suicidal thoughts or attempts; swelling of the hands, ankles, or feet; swollen lymph glands; tremor; unusual bruising or bleeding; unusual weakness or tiredness; vaginal itching or discharge; vision changes; yellowing of the eyes or skin.

This is not a complete list of all side effects that may occur. If you have questions or need medical advice about side effects, contact your doctor or health care provider.

Tell your health care provider if you are taking any other medicines, especially any of the following:

Valproate (eg, valproic acid, divalproex sodium) because it may increase the risk of Lamotrigine (Lamictal)'s side effects
Carbamazepine because it may decrease Lamotrigine (Lamictal)'s effectiveness, and the risk of side effects, such as dizziness, double vision, blurred vision, and decreased coordination, may be increased
Estrogens, phenobarbital, phenytoin, primidone, rifampin, or succinimides (eg, methsuximide) because they may decrease Lamotrigine (Lamictal)'s effectiveness
Hormonal contraceptives (eg, birth control pills) because the effectiveness of both medicines may be decreased

This may not be a complete list of all interactions that may occur. Ask your health care provider if Lamotrigine (Lamictal) may interact with other medicines that you take.

If overdose is suspected, contact your local poison control center or emergency room immediately.

Contact your doctor at once if you develop rash symptoms, including red, swollen, blistered, or peeling skin. Even if Lamotrigine (Lamictal) is stopped, a rash caused by Lamotrigine (Lamictal) may still become life-threatening or cause other serious side effects.

If you develop new or worsening seizures, contact your doctor right away.

Before you start or stop taking hormonal birth control whilst you are taking Lamotrigine (Lamictal), consult your doctor.

Tell your doctor or dentist that you take Lamotrigine (Lamictal) before you receive any medical or dental care, emergency care, or surgery.

If you have any questions about Lamotrigine (Lamictal), please talk with your doctor, pharmacist, or other health care provider.

Do not double doses to make up for a missed dose.

Treating certain types of seizures.

Lamotrigine (Lamictal) may also be used for other conditions as determined by your doctor.

Store away from heat and direct light.

Tell your doctor or pharmacist if you have any medical conditions, especially if any of the following apply to you:

if you are pregnant, planning to become pregnant, or are breast-feeding

if you are taking any prescription or nonprescription medicine, herbal preparation, or dietary supplement

if you have allergies to medicines, foods, or other substances

if you have liver or kidney problems, heart problems, certain blood problems (eg, thalassemia), or Parkinson disease, or if you receive dialysis treatments

if you have a skin rash or have ever developed a skin rash from taking Lamotrigine (Lamictal)

if you have a history of mental or mood problems or suicidal thoughts or attempts