Cefaclor Anhydrous: Side Effects, Uses & Monitoring
Cefaclor is indicated in the treatment of the following infections when caused by susceptible strains of the designated microorganisms: Otitis media caused by Streptococcus pneumoniae, Haemophilus influenzae , staphyloco
- Data source
- FDA labeling via NIH DailyMed (label 224af904…)
- Label version
- current
- Last reviewed
- 2026
Reported adverse reactions
Reactions listed in current FDA labeling, with the highest frequency reported across summarized placebo-controlled trials.
No structured frequency data available in current labeling. Consult the official label.
Labeled uses (from FDA prescribing information)
Cefaclor is indicated in the treatment of the following infections when caused by susceptible strains of the designated microorganisms: Otitis media caused by Streptococcus pneumoniae, Haemophilus influenzae , staphylococci, and Streptococcus pyogenes Note: β-lactamase-negative, ampicillin-resistant (BLNAR) strains of Haemophilus influenzae should be considered resistant to cefaclor despite apparent in vitro susceptibility of some BLNAR strains. Lower respiratory tract infections , including pneumonia, caused by Streptococcus pneumoniae, Haemophilus influenzae , and Streptococcus pyogenes Note: β-lactamase-negative, ampicillin-resistant (BLNAR) strains of Haemophilus influenzae should be considered resistant to cefaclor despite apparent in vitro susceptibility of some BLNAR strains. Pharyngitis and Tonsillitis , caused by Streptococcus pyogenes Note: Penicillin is the usual drug of choice in the treatment and prevention of streptococcal infections, including the prophylaxis of rheumatic fever. Cefaclor is generally effective in the eradication of streptococci from the nasopharynx; however, substantial data establishing the efficacy of cefaclor in the subsequent prevention of rheuma…
Conditions associated with Cefaclor Anhydrous in labeling
Ear Infection (Otitis Media)
Infection or inflammation of the middle ear, common in children, causing ear pain, fever, and sometimes fluid ...
Kidney Infection (Pyelonephritis)
A bacterial infection of the kidneys, usually ascending from the bladder, causing fever, flank pain, and urina...
Otitis Media
Infection or inflammation of the middle ear, common in children, causing ear pain, fever, and sometimes hearin...
Pneumonia
Infection of the lung tissue that can cause cough, fever, chills, and difficulty breathing. Can be caused by b...
Rheumatic fever
Rheumatic fever is a medical condition that may be associated with various symptoms and signs....
Tonsillitis
Inflammation of the tonsils, often caused by viral or bacterial infection, causing sore throat, fever, and swo...
Frequently Asked Questions
What is Cefaclor Anhydrous used for?
FDA labeling lists the approved uses shown above under "Labeled uses." This summary is informational; only a qualified prescriber can determine whether a medication is appropriate for you.
What are the most commonly reported side effects of Cefaclor Anhydrous?
Current labeling for this ingredient does not include a structured frequency table that we can reproduce. Review the official label linked below.
Does Cefaclor Anhydrous require lab monitoring?
Monitoring needs vary. Ask your healthcare provider whether any lab tests apply while taking Cefaclor Anhydrous.
Where does this information come from?
All clinical facts on this page were extracted from the current FDA-registered product labeling for this ingredient, published by manufacturers through NIH DailyMed. See the source link below.
Medical disclaimer: Educational content extracted from public FDA labeling. Not medical advice. Always consult a qualified healthcare professional before starting, stopping, or changing any medication.