Cefaclor is a second-generation cephalosporin antibiotic used to treat certain bacterial infections such as pneumonia and infections of the ear, lung, skin,tonsils, throat, and urinary tract. Cefaclor, sold under the trade name Ceclor among others, is a second-generation cephalosporin antibiotic used to treat certain bacterial infections such as pneumonia and infections of the ear, lung, skin, throat, and urinary tract. Medscape - Indication-specific dosing for cefaclor, frequency-based adverse effects, comprehensive interactions, contraindications, pregnancy & lactation schedules, and cost information. To reduce the development of drug-resistant bacteria and maintain the effectiveness of Cefaclor Capsule and other antibacterial drugs, Cefaclor Capsule should be used only to treat or prevent infections that are proven or strongly suspected to be caused by susceptible bacteria. Cefaclor is in a group of drugs called cephalosporin (SEF a low spor in) antibiotics. It works by fighting bacteria in your body. Cefaclor is used to treat many different types of infections caused by bacteria. Cefaclor may also be used for other purposes not listed in this medication guide. Find patient medical information for Cefaclor (Ceclor, Raniclor) on WebMD including its uses, side effects and safety, interactions, pictures, warnings, and user ratings Cefaclor prescription and dosage information for physicians and health care professionals. Pharmacology, adverse reactions, warnings, and Cefaclorside effects. What is cefaclor? Cefaclor is a cephalosporin (SEF a low spor in) antibiotic. It works by fighting bacteria in your body. Cefaclor is used to treat many kinds of bacterial infections, such as bladder infection, ear infection, skin infection, or infection of the respiratory tract. To reduce the development of drug-resistant bacteria and maintain the effectiveness of Cefaclor Capsule and other antibacterial drugs, Cefaclor Capsule should be used only to treat or prevent infections that are proven or strongly suspected to be caused by susceptible bacteria. Cefaclor is used to treat certain infections caused by bacteria. Cefaclor is in a class of medications called cephalosporin antibiotics. It works by stopping the growth of bacteria. Antibiotics such as cefaclor will not work for colds, flu, or other viral infections.