17 Aug 2013
It is not a "sulfa" or "sulpha" drug. This term applies to drugs whose mechanism of action is dependent upon the sulfonamide group. This group consists of a particular arrangement of a sulfur atom double-bonded to two oxygen atoms and a Nitrogen atom. Cefdinir does contain a Thiazole group, but if there are allergies associated with this, it is unrelated to allergies to sulfonamides. Completely unrelated. I hope that this clarifies things for those who are seeking a reliable reference.
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