the best magnetized Iodine is magnascent. it is spendy but it is the best. any magnets will do. you want them pulling each other so a magnetic field is created.
biomagnetics is quite a subject. the negative side (the one the north needle on a compass points to) is normalizing while the positive side is stimulating, even to pathogenic processes. negative will give you alkaline pH and positive will give you acidic PH. i would use negative on cancer.
how much is the shipping on that iodine? i tried to order some to see shipping costs but couldnt. but couldnt.