Cephalexin – What It Is and When It’s Used

Cephalexin is a first‑generation cephalosporin antibiotic. It fights a range of bacteria that cause skin infections, ear infections, urinary‑tract infections, and some types of pneumonia. Doctors often pick it because it works well, is cheap, and is easy to take.

If you have a doctor‑prescribed Cephalexin, it means the infection is likely caused by bacteria that this drug can kill. It won’t help with viral illnesses like the common cold or flu.

How to Take Cephalexin Correctly

Take Cephalexin exactly as your doctor tells you. Usually the dose is 250 mg to 1 g taken every 6 to 12 hours. Swallow the tablet with a full glass of water. You can take it with food or on an empty stomach, but a meal can help avoid stomach upset.

Don’t skip doses. Even if you feel better after a few days, finish the full prescription. Stopping early can let the bacteria survive and become resistant, making future infections harder to treat.

If you miss a dose, take it as soon as you remember—unless it’s almost time for the next dose. In that case, skip the missed one and continue on schedule. Never double up.

Possible Side Effects and When to Call a Doctor

Most people tolerate Cephalexin well. Common side effects include mild stomach upset, diarrhea, and a rash. These usually go away on their own.

If you notice severe diarrhea (especially if it’s watery and persistent), a fever, or a rash that spreads or blisters, call your doctor right away. These could be signs of a more serious reaction.

Allergic reactions are rare but can happen. Signs include swelling of the face, lips, or tongue, difficulty breathing, or hives. Treat these as emergencies—seek medical help immediately.

Older adults and people with kidney problems may need a lower dose. Always mention any other medicines you’re taking, especially other antibiotics, blood thinners, or medicines that affect the kidneys.

Storing Cephalexin is simple: keep it at room temperature, away from moisture and heat. Do not use it past the expiration date printed on the bottle.

Below are some of the latest MedPh Online articles that also mention Cephalexin or related topics. They can give you deeper insight into antibiotic use, safety, and buying tips.

• Bromhexine vs Ambroxol: Which Mucolytic Works Better for a Productive Cough?
• Buy Generic Prozac Online Safely: Cheap Fluoxetine in 2025
• Solosec vs Flagyl: Ultimate Comparison of Dosage, Side Effects, and Cost in 2025
• Orlistat: Real‑World Guide to Using Orlistat for Weight Loss
• Advair Diskus vs Symbicort: Side‑by‑Side Dosing, Coverage & Efficacy Guide 2025

In short, Cephalexin is a reliable antibiotic for many common bacterial infections. Follow your doctor’s directions, finish the whole course, and watch for any unusual symptoms. When used correctly, it gets you back on your feet fast without unnecessary complications.