Cycloserine side effects

If you experience any of the following serious side effects, seek emergency medical attention or contact your doctor immediately:

an allergic reaction (difficulty breathing; closing of your throat; swelling of your lips, tongue, or face; or hives);

seizures;

numbness or tingling in your hands or feet;

a skin rash;

confusion or abnormal behavior;

tremors (shaking);

headache;

drowsiness;

dizziness;

difficulty speaking; or

irritability.