Get emergency medical help if you have signs of an allergic reaction (hives, difficult breathing, swelling in your face or throat) or a severe skin reaction (fever, sore throat, burning eyes, skin pain, red or purple skin rash with blistering and peeling).
Call your doctor at once if you have:
severe stomach pain, diarrhea that is watery or bloody (even if it occurs months after your last dose);
fever, chills, body aches, flu symptoms;
pale skin, easy bruising, unusual bleeding;
seizure (convulsions);
fever, weakness, confusion;
dark colored urine, jaundice (yellowing of the skin or eyes); or
kidney problems--little or no urination, swelling in your feet or ankles, feeling tired or short of breath.
Common side effects may include:
nausea, vomiting, stomach pain, diarrhea;
vaginal itching or discharge;
headache; or
rash (including diaper rash in an infant taking liquid cefdinir.
This is not a complete list of side effects and others may occur. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.
 Cefdinir side effects (more detail)
