I Am Worried About Developing A Sulfa Drug Allergic Reaction. Which Medicines Should I Avoid?
There are several medicines that you should avoid if you have, or if you have reason to believe that you may have, a sulfa allergy. Specifically, these medicines include, but are not necessarily limited to, the antibiotics sulfamethoxazole, trimethoprim-sulfamethoxazole (also known as Septra or Bactrim), and erythromycin-sulfisoxasole.
In addition to these antibiotics, there are other closely-related drugs that may cause an allergic reaction in those who are allergic to sulfa drugs. These include, in particular, sulfasalazine and dapsone, but also furosemide, hydrochlorothiazide, glyburide, glimepiride, celecoxib and sumatriptan. Sulfasalazine, which is used to treat Crohn's disease, rheumatoid arthritis and colitis, and dapsone, which is used to treat pneumonia and dermititis, absolutely should be avoided as they are especially closely-related to sulfa drugs and therefore would be expected to cause a reaction in those who are allergic to sulfa compounds.
Please note, however, that there may be other drugs that should be avoided to guard against developing a sulfa allergic response. As always, please consult your family doctor about the safety and posible complications of taking any particular drug. This article is meant only to provide some basic sulfa allergy background information and is not meant to replace the sound advice of your doctor.