How do I get the hospital to give me cardizam from now on for my SVT attack?

I'm not sure how your health system up there works with keeping information up to date but can you request an allergy type flag on your chart or get a health alert bracelet to warn of the reaction to the drug you don't want and recommend the other treatment. Another idea is to make up a business card size notice about the 2 drugs and keep it in your wallet so if you can't talk well enough to tell them you can hand them then note.