Medical Information Only: This medication is not sold on this site. The information provided is for reference purposes only. Please consult your local physician or pharmacist for treatment.
Keflex Side Effects Center
Medically reviewed by Min Clinic Staff | Updated: January 2026
- Generic Name: cephalexin
- Brand Name: Keflex
- Drug Class: Cephalosporins, 1st Generation
Keflex (Cephalexin) side effects drug center
Keflex Side Effects Center
What Is Keflex?
Keflex (cephalexin) is a cephalosporin antibiotic prescribed to treat bacterial infections. Keflex is also used before dental procedures in patients identified with certain heart-related conditions to prevent bacterial infections of the heart known as endocarditis. Keflex is available as a generic drug.
What Are Side Effects of Keflex?
Common side effects of Keflex include:
- diarrhea,
- dizziness,
- tiredness,
- headache,
- stomach upset,
- abdominal pain,