High thyroid level, is surgery or nuclear medicine better?

am suffering from last nineteen years hyper thyroid first year am taking neo mercazole 5 mg tablet ( 3 numbers ) propal10 ( propatheline ) TAKE THE MEDICINE IN 6 MONTHS AFTER TO STOP MEDICINE. TWO YEARS LATER THE symptoms have begun again I am taking medicine neomercazole 20 mg and atonale 50 mg,
now my thyroid level is high my physician advises me surgery to remove the gland can you suggest is better nuclear medicine or is better in surgery