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Author: Site Editor Publish Time: 2023-02-08 Origin: Site
Cefaclor, sold under the trade names Ceclor among others, is a second-generation cephalosporin antibiotic used to treat certain bacterial infections such as pneumonia and infections of the ears, lungs, skin, throat and urinary tract.It is also available from other manufacturers as a generic product.Patented in 1973, approved for medical use in 1979.
Medical use
Cefaclor belongs to the family of antibiotics known as cephalosporins (cefalosporins).Cephalosporins are broad-spectrum antibiotics used to treat sepsis, pneumonia, meningitis, biliary tract infections, peritonitis, and urinary tract infections.The pharmacology of cephalosporins is similar to that of penicillins, and they are mainly excreted by the kidneys.Cefotaxime is a better cephalosporin than cefaclor for CNS infections, such as meningitis,unless the meninges are inflamed.Cefaclor is active against many bacteria, including Gram-negative and Gram-positive organisms.
Scope of activities 
Cefaclor is often used to fight bacteria that cause skin infections, ear infections, urinary tract infections, etc.Cefaclor has been shown to be active against most strains of the following microorganisms, including in vitro and clinical infections:Gram-positive aerobic bacteria - staphylococci (including coagulase-positive, coagulase-negative, and penicillinase-producing strains), pneumonia Streptococcus and Streptococcus pyogenes (group A beta-hemolytic streptococci).The following represent MIC susceptibility data for some
microorganisms of medical significance.
Haemophilus influenzae: 0.03 μg/mL - 128 μg/mL
Staphylococcus aureus: 0.6 μg/mL - 128 μg/mL
Streptococcus pyogenes: 0.06 μg/mL - 4 μg/mL
Precautions and contraindications
Precautions include known sensitivity to beta-lactam antimicrobials, such as penicillin (cefixaclor should be avoided if there is a history of immediate hypersensitivity); renal impairment (no dose adjustment is required, although manufacturer advises caution);Pregnancy and breastfeeding (but suitable for use); false positive urine glucose (if testing reducing substances) and false positive Coombs test. Cefaclor has also been reported to cause serum sickness-like reactions in children.Cefaclor is contraindicated in case of hypersensitivity (i.e.hypersensitivity) to cephalosporins.
Side effect
The main side effect of cephalosporins is hypersensitivity.Patients sensitive to penicillins are also allergic to cephalosporins,depending on the generation of the cephalosporin.The previous percent cross-reactivity rate of 10% is generally overestimated.Allergic reactions can manifest,for example, as rashes, pruritus (itching), hives, serum sickness-like reactions with rashes, fever and arthralgia, and anaphylaxis. Frequency and severity of serum sickness-like reactions in children lead researchers to question role in pediatric disease.Other side effects include gastrointestinal disturbances (eg, diarrhea, nausea and vomiting, abdominal discomfort, liver enzyme disturbances, transient hepatitis, and cholestatic jaundice), headache, and Stevens-Johnson syndrome.Rare side effects include eosinophilia and blood disorders (including thrombocytopenia, leukopenia, agranulocytosis, aplastic anemia, and hemolytic anemia); reversible interstitial nephritis; hyperactivity, nervousness, sleepiness Disorders, hallucinations, confusion, hypertonia, and dizziness.Toxic epidermal necrolysis has been reported.In the UK, the Committee on the Safety of Medicines (CSM) warns of a higher risk of diarrhea and a rare antibiotic-associated colitis from higher doses. Interactive
Coumarin
Cephalosporins may potentiate the anticoagulant effect of coumarins (e.g. warfarin)-Changes in a patient's clinical status,especially those related to liver disease, co-morbidities, or drug administration, require more frequent INR testing and Adjust dose as necessary.
Probenecid
Probenecid reduces the excretion of cephalosporins (leading to an increase in the concentration of the drug in the plasma).
Antacids
Antacids reduce the absorption of cefaclor.Therefore,antacids should not be taken before or at the same time as cefaclor.