Antibiotics and Other Sulfonamides to Avoid If You Have a Sulfa Allergy Medically reviewed by Jurairat J. Molina, MD Sulfa drugs are synthetic (man-made) medications made from sulfanilamide that ...

Sulfonamides, or “sulfa drugs,” are a group of medicines used to treat bacterial infections. They come in different formulations and may be taken as an oral, topical, vaginal, or ophthalmic (eye) ...

What Is a Sulfa Allergy? A sulfa allergy is a rash or more serious reaction to sulfa drugs. These drugs can treat a range of health problems from eye infections to rheumatoid arthritis (RA). Sulfa ...

Only since February 1935 has the drug sulfanilamide been known. In the past three years it has proven so useful as a treatment for “coccus” infections (streptococcus, gonococcus, meningococcus) and ...