Written & medically reviewed by Dr. Sanjay Anbu, MBBS· Last reviewed
Cephalexin is a first-generation cephalosporin for skin, throat and urinary infections. It belongs to the Cephalosporin antibiotic group. Cephalosporins are a large family of antibiotics for many bacterial infections.
Tell your doctor about penicillin/cephalosporin allergy
Complete the full course
Antibiotics do not help viral infections
When to see a doctor urgently
Severe allergy (swelling, breathing difficulty)
Severe or bloody diarrhoea
Widespread rash
Not a prescription — no dose shown. The right dose of cephalexin depends on age, weight, kidney/liver function and the condition, so MedDroid does not show a dose here. Always get your dose from a doctor or pharmacist and the leaflet inside the pack. General educational information only.
Frequently asked questions
Can I take a cephalosporin if I am allergic to penicillin?
There is a small chance of cross-reaction, so always tell your doctor about any penicillin allergy before taking one.
Should I finish the course?
Yes — stopping early can leave bacteria that regrow and become resistant.
Reviewed by Dr. Sanjay Anbu, MBBS. MedDroid is an AI medical assistant and can make mistakes. It provides general health information, not a diagnosis or medical advice — always consult a qualified clinician. In an emergency, contact your local emergency number immediately.