Approved indications
Oral cefuroxime axetil is approved to treat susceptible infections including: pharyngitis/tonsillitis, acute bacterial maxillary sinusitis, acute bacterial exacerbations of chronic bronchitis, uncomplicated skin and skin-structure infections, uncomplicated urinary tract infections (e.g., cystitis), and early Lyme disease (erythema migrans) to prevent later complications.

Off-label uses
Clinicians may use cefuroxime off-label for other susceptible infections (for example, some community-acquired respiratory or ear infections) when culture results and local resistance patterns support its use, but evidence and guidelines often favor other first-line agents such as amoxicillin or amoxicillin–clavulanate.

Efficacy expectations
Many patients begin to feel some improvement within 48–72 hours, though full resolution often requires taking the full course (typically 7–10 days, or 20 days for some Lyme regimens). For most approved indications, clinical cure rates are generally comparable to other oral cephalosporins and to penicillin-based options when the infecting organism is susceptible. Compared with similar antibiotics, its spectrum covers many common respiratory and skin pathogens, but local resistance patterns (especially among gram-negative bacteria and pneumococci) may limit effectiveness in some regions.

Typical dosing and how to take
Adults commonly take 250–500 mg by mouth every 12 hours, with the exact dose and duration depending on the infection (for example, 10 days for pharyngitis/tonsillitis, 10 days for most skin or urinary infections, and 20 days for early Lyme disease). Children 3 months and older usually receive about 20–30 mg/kg/day divided every 12 hours, not exceeding the usual adult maximum dose, with specific doses set by the prescriber. Cefuroxime axetil tablets should be taken with food to improve absorption; the oral suspension is usually given with meals as well and should be shaken well before each dose.

Special instructions
Swallow tablets whole; do not crush unless a pharmacist or prescriber confirms it is acceptable. Use an appropriate measuring device for liquid doses (not household spoons). Complete the full prescribed course even if you begin to feel better early, to reduce the risk of relapse and resistance.

Missed dose guidance
If a dose is missed, take it as soon as remembered unless it is almost time for the next dose; in that case, skip the missed dose and resume the regular schedule. Do not double doses to make up for a missed one.

Overdose
In case of suspected overdose, especially if there are symptoms like severe nausea, vomiting, diarrhea, confusion, or seizures, seek emergency medical care or contact a poison control center right away.

Common side effects
Common side effects include diarrhea, nausea, vomiting, stomach pain, headache, and vaginal yeast infections, usually mild to moderate and appearing in the first few days of treatment. Taking the medicine with food can reduce stomach upset.

Serious or rare adverse effects
Serious reactions that need immediate medical attention include severe allergic reactions (rash, hives, swelling of face or throat, trouble breathing), severe skin reactions, persistent or bloody diarrhea that could signal Clostridioides difficile infection, jaundice or dark urine suggesting liver problems, and unusual bruising or bleeding. Rarely, severe skin reactions and anaphylaxis can occur, especially in people with a history of beta-lactam allergy.

Warnings and precautions
Use cautiously in people with a history of penicillin or cephalosporin allergy, kidney impairment (dose adjustment may be required), or prior C. difficile infection. During pregnancy, cefuroxime is generally considered an option when clearly needed; discuss risks and benefits with a clinician. It passes into breast milk in small amounts and is usually compatible with breastfeeding, although infants should be observed for diarrhea or thrush. It is approved for children 3 months and older; safety for younger infants has not been established.

Relative safety compared with other antibiotics
Like other cephalosporins, cefuroxime axetil has a relatively favorable safety profile, with serious allergic and gastrointestinal complications uncommon but possible. The risk of C. difficile–associated diarrhea is present and may be higher than with some narrower-spectrum agents, so use should be limited to clear bacterial indications.

Reporting side effects and safety updates
Patients in the United States can report suspected side effects to the FDA MedWatch program (online or by phone) and can check FDA safety communications for updated information on antibiotic risks and labeling changes.

Drug and supplement interactions
Antacids or very strong acid-reducing medicines (such as high-dose H2 blockers or proton pump inhibitors) may reduce absorption of cefuroxime axetil if taken at the same time; separating doses in time may help. Probenecid can increase cefuroxime levels by decreasing renal excretion. As with other antibiotics, cefuroxime may temporarily reduce the effectiveness of live oral bacterial vaccines (such as some typhoid vaccines). No major interactions with moderate alcohol intake are known, but alcohol can worsen stomach upset.

Food and laboratory interactions
Taking cefuroxime axetil with food improves absorption, so doses are generally recommended with meals. It may cause false-positive results on some urine glucose tests that use copper reduction methods; enzymatic glucose tests are preferred.

Precautions and contraindications
Do not use cefuroxime axetil in patients with known serious hypersensitivity to cefuroxime, other cephalosporins, or severe immediate reactions to penicillins unless a specialist determines it is safe. Use with caution in patients with kidney impairment (dose adjustments may be needed) and in those with a history of gastrointestinal disease, especially colitis.

Monitoring needs
For short courses in otherwise healthy people, routine blood tests are usually not required. In patients with significant kidney disease, prolonged therapy, or concomitant nephrotoxic drugs, clinicians may periodically monitor kidney function and complete blood counts and watch for signs of allergic reactions or C. difficile–associated diarrhea.

Q: What types of infections does cefuroxime axetil treat?
A: It is used to treat certain bacterial throat and sinus infections, lung infections such as acute bacterial exacerbations of chronic bronchitis, uncomplicated skin infections, uncomplicated urinary tract infections, and early Lyme disease when the infecting bacteria are susceptible.

Q: How long does it take for cefuroxime axetil to start working?
A: Some improvement in symptoms is often noticed within 48–72 hours, but you should continue taking it for the full prescribed course even if you feel better sooner.

Q: Should I take cefuroxime axetil with food?
A: Yes, it is usually recommended to take the tablets and suspension with food or shortly after a meal to improve absorption and reduce stomach upset.

Q: Can I take cefuroxime axetil if I am allergic to penicillin?
A: Some people with penicillin allergy can safely take cefuroxime, but there is a small risk of cross-reaction, especially if the penicillin reaction was severe; tell your clinician about any past antibiotic allergies so they can decide if this medicine is appropriate.

Q: What should I do if I get diarrhea while taking cefuroxime axetil?
A: Mild loose stools can occur, but if you develop severe, persistent, or bloody diarrhea, stop the medicine and contact your healthcare provider promptly, as this can be a sign of a more serious intestinal infection.

Storage
Store tablets at room temperature away from moisture and heat, in the original tightly closed container and out of reach of children. If using an oral suspension, store it in the refrigerator, do not freeze, and discard any unused suspension after 10 days or as directed on the label.

Disposal
Do not flush unused cefuroxime axetil down the toilet unless the label specifically instructs this. Mix leftover medicine with an unappealing substance (such as coffee grounds or cat litter), seal in a bag or container, and place in household trash if no take-back program is available, or use a community drug take-back site or event when possible.