Cefprozil: uses, dosing, side effects & brands
Cefprozil is a medicine sold in the U.S. under 2 brand and generic names, for bronchitis, escherichia coli infections and haemophilus infections. Below: what the FDA label says, every product that contains it, what the pills look like, and its recall record.
Key facts
- Treats (across its forms)
- Bronchitis, Escherichia Coli Infections and Haemophilus Infections
- Available as
- Powder · Tablet
- Sold as
- 2 products — Cefprozil and Cefzil
- Prescription?
- Prescription only
- Generic available?
- Yes
- What the pharmacy pays
- about $0.22 per ml — not your price
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How cefprozil is dosed
From the FDA label for Cefprozil (application ANDA065276). Other cefprozil products — different forms, different strengths — are dosed differently. Follow the label for the one you were prescribed.
Cefprozil tablets are administered orally. Population / Infection Dosage ( mg ) Duration ( days ) a In the treatment of infections due to Streptococcus pyogenes, cefprozil tablets should be administered for at least 10 days. b Not to exceed recommended adult doses. ADULTS (13 years and older) UPPER RESPIRATORY TRACT Pharyngitis/Tonsillitis 500 q24h 10 a Acute Sinusitis 250 q12h or 10 (For moderate to severe infections, the higher dose should be used) 500 q12h LOWER RESPIRATORY TRACT Acute Bacterial Exacerbation of Chronic Bronchitis 500 q12h 10 SKIN AND SKIN STRUCTURE Uncomplicated Skin and Skin Structure Infections 250 q12h or 10 500 q24h or 500 q12h CHILDREN (2 years to 12 years) UPPER RESPIRATORY TRACT b Pharyngitis/Tonsillitis 7.5 mg/kg q12h 10 a SKIN AND SKIN STRUCTURE Uncomplicated Skin and Skin Structure Infections 20 mg/kg q24h 10 INFANTS & CHILDREN (6 months to 12 years) UPPER RESPIRATORY TRACT b Otitis Media 15 mg/kg q12h 10 (See INDICATIONS AND USAGE and CLINICAL STUDIES ) Acute Sinusitis 7.5 mg/kg q12h or 10 (For moderate to severe infections, the higher dose should be used) 15 mg/kg q12h Renal Impairment: Cefprozil may be administered to patients with impaired renal function. The following dosage schedule should be used. Creatinine Clearance ( mL / min ) Dosage ( mg ) Dosing Interval 30 to 120 standard standard 0 to 29 Cefprozil is in part removed by hemodialysis;…
Cefprozil side effects
The adverse reactions to cefprozil are similar to those observed with other orally administered cephalosporins. Cefprozil was usually well tolerated in controlled clinical trials. Approximately 2% of patients discontinued cefprozil therapy due to adverse events. The most common adverse effects observed in patients treated with cefprozil are: Gastrointestinal: Diarrhea (2.9%), nausea (3.5%), vomiting (1%), and abdominal pain (1%). Hepatobiliary: Elevations of AST (SGOT) (2%), ALT (SGPT) (2%), alkaline phosphatase (0.2%), and bilirubin values (<0.1%). As with some penicillins and some other cephalosporin antibiotics, cholestatic jaundice has been reported rarely. Hypersensitivity: Rash (0.9%), urticaria (0.1%). Such reactions have been reported more frequently in children than in adults. Signs and symptoms usually occur a few days after initiation of therapy and subside within a few days after cessation of therapy. CNS: Dizziness (1%), hyperactivity, headache, nervousness, insomnia, confusion, and somnolence have been reported rarely (<1%). All were reversible. Hematopoietic: Decreased leukocyte count (0.2%), eosinophilia (2.3%). Renal: Elevated BUN (0.1%), serum creatinine (0.1%). Other: Diaper rash and superinfection (1.5%), genital pruritus and vaginitis (1.6%). The following adverse events, regardless of established causal relationship to cefprozil tablets, have been rarely…
Who shouldn’t take cefprozil
Cefprozil is contraindicated in patients with known allergy to the cephalosporin class of antibiotics.
Every cefprozil product we track (2)
Same active ingredient — different manufacturer, form, price and FDA recall record. That last one is what our independent score measures.
| # | Drug | Rating | Type | Form | Generic? | Pharmacy pays | |
|---|---|---|---|---|---|---|---|
| 1 | 64/100 | Prescription | Suspension | Generic | $0 | View → | |
| 2 | Not yet rated | Prescription | Tablet | Generic | $0 | View → |
What cefprozil pills look like
Imprint codes, colour and shape from the FDA’s labelling data. Match the imprint on your pill — or search any imprint.
How long cefprozil keeps
The date on a sealed pack is not the only one: some cefprozil labels start a second clock once the product is opened or mixed, as short as 14 days.
Does cefprozil expire? The in-use limits and storage rules from its labelsCefprozil and breastfeeding
From LactMed, the US National Library of Medicine’s Drugs and Lactation Database — quoted, not rewritten.
Full LactMed record for cefprozil: levels in milk, effects in breastfed infants, and the drugs it would consider insteadLimited information indicates that cefprozil produces low levels in milk that are not expected to cause adverse effects in breastfed infants. Occasionally disruption of the infant's gastrointestinal flora, resulting in diarrhea or thrush have been reported with cephalosporins, but these effects have not been adequately evaluated. Cefprozil is acceptable in nursing mothers.
National Institute of Child Health and Human Development, record revised October 15, 2024. LactMed states its information is not a substitute for professional judgement.
What people report to the FDA about cefprozil
The FDA Adverse Event Reporting System (FAERS) collects reports from patients and clinicians. It holds 837 reports naming cefprozil, and the FDA flagged 78% of those reports as serious. The effects reported most often — leaving out reports about overdose, misuse or the condition being treated, which dominate the raw list for common medicines:
- chronic kidney disease90 reports
- drug hypersensitivity73 reports
- cough70 reports
- dyspnoea64 reports
- acute kidney injury60 reports
- pyrexia59 reports
- diarrhoea58 reports
- pneumonia57 reports
Read these as a signal, not a rate. A report does not mean cefprozil caused the effect — anyone can file one, and many describe people taking several medicines for several conditions. Crucially there is no denominator: FAERS does not record how many people took the drug, so these counts cannot be turned into “X% of patients” — a bigger number often just means a more widely used or more talked-about drug. Duplicates exist, and publicity drives reporting. For what is actually established, read the FDA label section above.
Source: openFDA drug/event (FAERS), retrieved July 25, 2026.
Related calculators
Frequently asked questions
What is cefprozil?
Cefprozil is a semi-synthetic broad-spectrum cephalosporin antibiotic. Cefprozil is a cis and trans isomeric mixture (≥90% cis).
Can you take cefprozil with other medicines?
It depends on the medicine. We check it against the FDA labels rather than guessing: our interaction checker searches each drug's own label for the other and quotes what it says, naming the section it came from. Run cefprozil against whatever else you take — and remember that a label not naming a drug is not the same as that combination being safe.
What brand names is cefprozil sold under?
We track 2 cefprozil-containing products in the U.S.: Cefprozil and Cefzil. They are the same active ingredient; they differ in form, manufacturer, price and FDA recall record.
What forms does cefprozil come in?
Across the brands we track, cefprozil is currently marketed as powder and tablet, per the FDA's National Drug Code Directory. Each form is dosed differently — follow the label for the exact product you were prescribed.
Is there a generic cefprozil?
Yes. Our catalog lists 1 generic cefprozil product alongside the brand versions. A generic has the same active ingredient and must meet the FDA's bioequivalence standard; it usually costs less. Ask your pharmacist which one your plan covers.
Cite this page
- APA
- pharmaranks. (2026, July 24). Cefprozil: uses, dosing, side effects & brands. https://pharmaranks.com/drugs/cefprozil
- MLA
- “Cefprozil: uses, dosing, side effects & brands.” pharmaranks, 24 July 2026, https://pharmaranks.com/drugs/cefprozil.
We summarise public FDA and NIH sources — for a clinical claim, cite the primary source we link to as well.
Sources: FDA openFDA drug label, National Drug Code Directory, and Enforcement (recall) database. This page reproduces public FDA data and is not medical advice. Dosing is set by your prescriber.
Read the full FDA label for cefprozil on DailyMed (NIH) ↗.