Question: is omnicef a sulfa drug?
Answer: Omnicef (cefdinir) and Bactrim (sulfamethoxazole and trimethoprim) are antibiotics used to treat many different types of infections caused by bacteria. Omnicef is a cephalosporin antibiotic and Bactrim DS is a combination of an anti-bacterial sulfonamide (a "sulfa" drug) and a folic acid inhibitor.