What is cefdinir, and what kind of infections does it treat?
Cefdinir is an oral antibiotic in the cephalosporin family. It’s used to treat certain bacterial infections, including:
- Ear infections (otitis media)
- Sinus infections (sinusitis)
- Throat infections such as strep throat (pharyngitis/tonsillitis)
- Lung and chest infections such as bronchitis and pneumonia (when caused by susceptible bacteria)
- Skin infections (certain bacterial skin infections)
Because it’s an antibiotic, cefdinir works only against bacteria and does not treat viral illnesses like the common cold or most cases of flu.
When do doctors choose cefdinir instead of other antibiotics?
Clinicians may choose cefdinir when they expect the likely bacteria to be susceptible and an oral cephalosporin is appropriate for the patient. It’s commonly used in outpatient settings for routine respiratory and ear/sinus infections where a bacterial cause is suspected.
Who should not take cefdinir?
People who have had a serious allergic reaction to cefdinir or other cephalosporins should avoid it. Tell a clinician about any past antibiotic allergies before starting.
Common side effects patients ask about
Typical side effects can include:
- Diarrhea or loose stools
- Nausea or stomach upset
- Headache
- Rash (contact a clinician if this happens, especially if it’s widespread)
If diarrhea is severe, persistent, or comes with fever or blood, get medical advice promptly.
Does cefdinir interact with food or other medicines?
Cefdinir can be affected by iron in the diet or supplements. Taking iron products close to a cefdinir dose can reduce absorption. If you use iron, ask a pharmacist or clinician for spacing instructions.
Is cefdinir the same as other antibiotics?
No. Cefdinir is different from antibiotics like penicillins (e.g., amoxicillin) or macrolides (e.g., azithromycin). Doctors pick an option based on the infection type, suspected bacteria, allergies, and local resistance patterns.