Dosage, Administration, and Potential Side Effects of Cephalexin

Cephalexin dosage depends on the infection’s severity and your individual needs. Your doctor will determine the appropriate dose. Typically, adults take 250-500 milligrams (mg) every 6 hours or 500 mg every 12 hours. Children’s dosages are calculated based on weight and are prescribed by a pediatrician. Always follow your doctor’s instructions exactly.

Take cephalexin orally with a full glass of water. You can take it with food to minimize stomach upset, but this is not always required. Maintain consistent spacing between doses. For example, if your doctor prescribed a dose every 6 hours, aim for a roughly 6-hour interval between doses. Don’t skip doses or adjust the dosage without consulting your doctor.

Common side effects include diarrhea, nausea, and vomiting. These are usually mild and temporary. Less frequent but more serious side effects include allergic reactions (rash, itching, swelling), severe diarrhea (possibly indicating Clostridium difficile infection), and kidney problems. Seek immediate medical attention if you experience any severe or persistent side effects.

Inform your doctor about all medications you are currently taking, including over-the-counter drugs and supplements. Certain interactions can occur with cephalexin. This includes, but is not limited to, medications that affect kidney function. Alcohol consumption while taking cephalexin may increase the risk of side effects.

Remember: This information is for educational purposes only and should not replace professional medical advice. Always consult your doctor or pharmacist for personalized guidance regarding cephalexin use.