Gantrisin side effects

my friend in 1989 was put gan. for kidney infection it was phyronifrous in think its called. doc stuck a hepron lock in the arm for 28 days and had dose ever four hours all the time at hospital 28 days of doses. then, after no results. it was they had no clue what the side affects could be. and had no idea what might happen in ten years becasuse of the dosage. it was almost an experiment. this happpened in canada. now she suffers from intestinal problems, severe cronic pain, arthritis that is crippling, graves diesese and basically is not having fun. can barely walk i have know her for 21 years she was healthy before neeed if anyone has seen this before. this was called an experimental drug at that by the doc. have his name but won't use here is this an anomilly, has one one seen this before we need answers help would be ok from any source. please help if you can