Bacteria Home > Cefdinir

Cefdinir is often prescribed to treat common bacterial infections, such as middle ear infections, sinus infections, tonsillitis, and bronchitis. The medication is part of a class of drugs called cephalosporins. It works by preventing bacteria from making and maintaining their cell wall (which they need to survive). Cefdinir is available in capsule or liquid form, and is generally taken once or twice a day.

What Is Cefdinir?

Cefdinir (Omnicef®) is a prescription antibiotic that is licensed to treat a number of common bacterial infections.

Side Effects With Cefdinir

As with any medicine, side effects are possible. Not everyone who takes the medication, however, will experience side effects. If side effects do occur, in most cases, they are minor, meaning that they require no treatment or are easily treated by your healthcare provider.
Common cefdinir side effects include, but are not limited to:
Serious side effects can also occur, but they are less common.
(Click Side Effects of Cefdinir to learn more.)

What Should I Tell My Healthcare Provider?

You should talk to your healthcare provider prior to taking this medication if you:
  • Have kidney disease or kidney failure
  • Are pregnant or thinking of becoming pregnant
  • Breastfeeding
  • Have any allergies to cefdinir, to other cephalosporins, to penicillin, or to other types of antibiotics.
Also tell your healthcare provider about all other medicines you may be taking, including prescription and non-prescription medicines, antacids, vitamins, and herbal supplements.
(Click Precautions and Warnings With Cefdinir for more information on this topic, including information on who should not take the drug.)
Written by/reviewed by:
Last reviewed by: Kristi Monson, PharmD;
Last updated/reviewed:
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