This medication is a cephalosporin-type antibiotic used to treat a wide variety of bacterial infections (e.g., middle ear, skin, urine and respiratory tract infections). It works by stopping the growth of bacteria.

Stomach upset, headache, nausea, vomiting, or diarrhea may occur. If any of these effects persist or worsen, notify your doctor or pharmacist promptly.

Hypersensitivity to the drug and should be used cautiously in patients with hypersensitivity to penicillin.

Before taking cefaclor, tell your doctor or pharmacist if you are allergic to it; or to penicillins or other cephalosporins; or if you have any other allergies. This product may contain inactive ingredients, which can cause allergic reactions or other problems. Talk to your pharmacist for more details.

Before using this medication, tell your doctor or pharmacist your medical history, especially of: severe kidney disease, intestinal disease (colitis).

Kidney function declines as you grow older. This medication is removed by the kidneys. Therefore, elderly people may be more sensitive to this drug.

This medication passes into breast milk. Consult your doctor before breast-feeding.

Please consult your doctor when taking this medicine if you are pregnant.

Before using this medication, tell your doctor or pharmacist of all prescription and nonprescription/herbal products you may use, especially of: warfarin.