Is it safe to take Tapazole, when allergic to sulpha?

[summerbreeze847]

My 24 year old daughter was just diagnosed with Grave's Disease. The doctor was going to give her Tapazole until he found out she was allergic to sulpha. But I looked it up and it says people who are allergic to sulpha can safely take Tapazole. It's all in the way the chain of chemicals are structured. It says the chain contains sulfur dioxide and nitrogen attached to a benzene ring. The structure is very specific, and although many other drugs may contain sulfur, oxygen, nitrogen, hydrogen and a benzene ring, they are not "sulfa" drugs unless they are arranged as the "sulfa" chain. The original sulfa drugs were antibiotics. My concern is this doctor seems to be in a rush to either do RAI or surgery. He really didn't want to do the surgery because she is getting married  in almost a year to this date. I'm scared to death about the RAI. As I know she is after reading up on it. I've also looked at Natural Solutions for Grave's disease and wondering how to find a doctor for this? I'm hoping the doctor will take a look at the information I found on "sulpha" allergies and maybe try the Tapazole instead of these other treatments.  

[Mark Lupo, M.D.]

I have not seen any problems using tapazole in patients with sulfa allergies.  

[summerbreeze847]

Thank you for responding, your answer was very helpful. I am taking my daughter to another Dr. for a second opinion. This Dr. just keeps saying no to Tapazole without giving me us a reason as to why she cannot take except to say she is allergic to sulpha. But as you pointed out as did others, it is safe to take!! This is so frustrating!!!!!