Cefadroxil: what it treats, how to take it, and safety tips

Cefadroxil is an oral cephalosporin antibiotic you’ll often see for common infections — think skin infections, throat infections like strep, and some urinary tract infections. It works by stopping bacteria from building a proper cell wall, which helps your body clear the infection. It’s familiar, usually well tolerated, and often chosen when a simple, reliable antibiotic is needed.

How to take cefadroxil

Dosing depends on the type and severity of the infection. Adults commonly get doses that fall in the 250–1,000 mg range, taken once or twice a day. Kids get weight-based doses. Duration also changes: a mild throat or skin infection might need a shorter course, while some infections require 7–14 days. Your prescriber will pick the exact dose and length — follow that plan and don’t stop early even if you feel better.

If you have kidney problems, your doctor may reduce the dose or stretch the time between doses. Take cefadroxil with or without food; if it upsets your stomach, try taking it with a meal. Keep to the schedule as evenly spaced as possible to keep consistent drug levels in your body.

Side effects, allergies, and safety tips

Most people handle cefadroxil fine. The common side effects are mild stomach upset, diarrhea, and sometimes a headache. If you get a rash, itching, swelling, trouble breathing, or severe diarrhea (especially with fever), stop the drug and contact a doctor right away — these can be signs of a serious reaction.

If you’ve had a severe allergy to penicillin or other cephalosporins, tell your provider. Cross-reactions are not guaranteed but are possible. Also tell your clinician about all medicines you take — some drugs and health conditions require dose changes or closer monitoring.

Finish the whole prescribed course to reduce the chance of recurrence and resistance. Don’t share antibiotics or use leftover pills for a new illness. Store cefadroxil in a cool, dry place and keep it away from children and pets.

When symptoms don’t improve in 48–72 hours, or if you develop a high fever, worsening pain, confusion, or signs of dehydration, contact your healthcare provider. If you’re pregnant, breastfeeding, or have significant kidney or liver disease, check with your prescriber before starting cefadroxil. Good communication with your doctor keeps treatment safe and effective.