my younger brother, 16, is a patient of PSVT since the age of 5. he had undergone radioablative surgery a few years back but it failed. he now is on amiodarone therapy (100 mg daily) for 5 years. even with the drugs, he gets the attack. and i do worry about the side effects of the drug too though he has not shown any symptoms of such. any suggestions for alternatives? plz help!!!