Cefadroxil Dosage: How Much to Take and When

Got a prescription for cefadroxil and wondering how many pills you should pop? You’re not alone. This antibiotic is used for skin infections, urinary tract problems, and more, but the dose changes depending on age, weight, and what’s being treated. Below you’ll find straight‑forward dosing tables, real‑world tips, and safety pointers so you can take cefadroxil with confidence.

Standard adult dosing

For most healthy adults the usual dose is 500 mg every 12 hours. Doctors sometimes bump it up to 1 g twice a day for tougher infections like bone or joint issues. The treatment length usually runs from 7 to 14 days – short enough to finish before you forget, but long enough to clear the bug.

If your doctor gave you a tablet that’s 250 mg, simply double the number of pills each dose (two tablets instead of one). Always follow the exact schedule; skipping a dose can let bacteria survive and become resistant.

Special cases: kids, kidney problems, and specific infections

Children: Dosing is based on weight, not age. The typical range is 25–50 mg per kilogram of body weight every 12 hours. For a 30‑kg kid that works out to roughly 750‑1500 mg split into two doses. Pediatric tablets often come in lower strengths, so ask the pharmacist to double‑check your math.

Kidney impairment: Cefadroxil is cleared by the kidneys, so reduced function means a lower dose or longer interval. If your eGFR is under 30 ml/min, doctors usually cut the dose in half (e.g., 250 mg every 12 hours) and monitor you closely.

Specific infections: Urinary tract infections often need just 500 mg twice daily for a short course (5‑7 days). Skin infections might start with the same regimen but could extend to 10‑14 days if there’s swelling or pus. Always ask why your doctor chose a particular duration – it usually matches how deep the infection sits.

Missed a dose? Take it as soon as you remember, unless it’s almost time for the next one. In that case, skip the missed pill and continue with your regular schedule. Never double up; doubling can cause stomach upset or rare side effects like rash.

Speaking of side effects, most people tolerate cefadroxil well. The common ones are mild nausea, diarrhea, or a temporary skin itch. If you notice a severe rash, breathing trouble, or swelling of the face, seek medical help right away – those could be signs of an allergic reaction.

When storing your medication, keep it in a cool, dry place away from direct sunlight. The tablets stay stable for up to two years if they’re sealed and not exposed to moisture.

Bottom line: follow the exact dose your doctor wrote, take it on schedule, and finish the whole pack even if you feel better early. Doing so gives you the best chance of beating the infection without giving bacteria a chance to bounce back.