What is cephalexin used for? 

Cephalexin is an antibiotic that is most commonly used for: 

• Skin and soft tissue infection

• Pharyngitis/Tonsillitis (Group A Strep) 

• Pneumonia 

• Urinary tract infection 

What are the most common side effects seen with cephalexin? 

• Diarrhea

• Upset stomach 

• Abdominal pain

Contraindications

Cephalexin shouldn’t be taken if your child has had an anaphylactic reaction (hives or swelling of the tongue) to cephalexin previously or other medications that are similar to cephalexin (they are a drug class called cephalosporins). 

Tips & Tricks to administer cephalexin

If your child is having difficulty taking cephalexin (liquid or tablets), it can be mixed in some foods or beverages. Please keep in mind that if a medication is mixed with food or drink, it should be taken immediately. The mixture should not be saved or consumed later.

Cephalexin can be mixed with any food or beverage based on your child’s preference. 

How to store cephalexin

• Cephalexin tablets should be stored at room temperature.

• Cephalexin suspension (liquid) should be stored in the refrigerator. 

Breast feeding considerations 

• Cephalexin can be present in breast milk if being taken by the mother. 

• Cephalexin is generally considered as compatible with breastfeeding. 

• In some cases, the nursing infant can experience diarrhea from the cephalexin in the breast milk. 

The information in this database regarding prescription drugs is intended to supplement, not substitute for, the expertise and judgment of healthcare professionals. The information is not intended to cover all possible uses, directions, precautions, drug interaction or adverse effects, nor should it be construed to indicate that use of a particular drug is safe, appropriate, or effective for you or anyone else. A healthcare professional should be consulted before taking any drug, changing any diet or commencing or discontinuing any course of treatment. See disclaimer.