side effects:
Side-effects
gastro-intestinal disturbances, appetite changes, dry mouth, taste disturbance; headache, drowsiness, dizziness, sleep disorders, abnormal dreams; less commonly thirst, weight gain, aphthous stomatitis, gingival pain, chest pain, hypertension, tachycardia, atrial fibrillation, palpitation, panic attack, mood swings, dysarthria, asthenia, tremor, incoordination, hypertonia, restlessness, hypoaesthesia, impaired temperature regulation, menorrhagia, vaginal discharge, sexual dysfunction, dysuria, arthralgia, muscle spasm, visual disturbances, eye pain, lacrimation, tinnitus, acne, sweating, rash, and pruritus; myocardial infarction, anxiety, depression, aggression, irrational behaviour, psychosis, suicidal ideation and Stevens-Johnson syndrome also reported
its other name is Champix