To the cardiologist who answered my question about my thyroid?

can you e-mail back to me with more information? lm 45 yrs old. l been having some trouble with my overactive thyroid for 3 months this specialist my Doctor sent me to l sat in his office and he said l have graves disease. isn`t this a form of thyroid disease as well? l seem to be a little mixed up. the pills he gave me Topazole lm not taken these pills lf this is gonna make me sick or shut down my bone marrow. there is no way. my family doesn`t feel l should at all take these pills lf this is what lt`s gonna do to me. l want to be able to cure this not to make things worse.some night`s when l go to bed l lay there wondering lf lm ever gonna wake up the next day and this is scary.some night`s when l go to bed l can have a good night but other times there is no way. l can`t sleep cause my heart is racing so fast. l almost had to wake my husband up for him to bring me down to the hospital lt was that bad. someone has to be out there that can help me on this. and lm from canada.