Cefadroxil Dosage: What You Need to Know About Use, Side Effects, and Alternatives

When you're prescribed cefadroxil, a first-generation oral cephalosporin antibiotic used to treat bacterial infections like strep throat, skin infections, and urinary tract infections. Also known as Duricef, it's often chosen for its simplicity and reliability in treating common bugs that respond to penicillin. Unlike some stronger antibiotics, cefadroxil doesn't need to be taken multiple times a day — most people take it just once or twice, making it easier to stick with. But getting the cefadroxil dosage wrong can mean the infection comes back, or worse, leads to resistance.

For adults, the usual dose for most infections is 1 gram once a day, or split into 500 mg every 12 hours. Kids get doses based on weight — typically 30 mg per kg per day, divided into one or two doses. If you have kidney trouble, your doctor will lower the dose. It’s not just about how much you take — timing matters too. Taking it with food helps your stomach handle it better, but it doesn’t stop the drug from working. And don’t stop early just because you feel better. Stopping too soon is one of the biggest reasons antibiotics stop working over time.

Side effects are usually mild — upset stomach, diarrhea, or a rash. But if you get severe diarrhea with blood, swelling, or trouble breathing, stop taking it and call your doctor. People allergic to penicillin might react to cefadroxil too, so always tell your provider about any drug allergies. It doesn’t mix well with some other meds, like probenecid or blood thinners, so make sure your pharmacist knows everything you’re taking.

Many people wonder how cefadroxil stacks up against other antibiotics like amoxicillin, cefprozil, or even Bactrim. It’s not always the first pick, but it’s a solid option when you need something that’s well-tolerated and doesn’t require frequent dosing. If you’ve had side effects from other antibiotics, cefadroxil might be the alternative you didn’t know you needed.

Below, you’ll find real-world comparisons and practical guides from people who’ve used cefadroxil — and others who’ve tried similar drugs. Whether you’re wondering why your doctor picked it, how to handle side effects, or if there’s a better choice for your situation, the posts here give you the straight facts without the jargon.