Cefpodoxime is an oral antibiotic used to treat a range of common bacterial infections, including pneumonia, bronchitis, sinus infections, ear infections, urinary tract infections, skin infections, and strep throat. It belongs to the cephalosporin family of antibiotics and works by breaking down the cell walls of bacteria, which kills them directly rather than simply stopping their growth.
Infections Cefpodoxime Treats
Cefpodoxime covers a broad range of bacteria, making it useful for infections in several parts of the body. It is typically taken every 12 hours for 5 to 14 days, depending on the type of infection. A single dose can also be used to treat gonorrhea.
The most common uses include:
- Community-acquired pneumonia: bacterial lung infections picked up outside of a hospital setting
- Acute bacterial bronchitis flare-ups: worsening infections in people with chronic bronchitis
- Sinus infections: bacterial sinusitis that hasn’t cleared on its own
- Ear infections (otitis media): middle ear infections, particularly in children
- Strep throat and tonsillitis: infections of the throat and tonsils caused by streptococcal bacteria
- Urinary tract infections: uncomplicated bladder infections
- Skin and soft tissue infections: bacterial infections of the skin, including cellulitis and wound infections
- Gonorrhea: uncomplicated cases, treated with a single dose
The infection type determines both the dose and how long you take it. Urinary tract infections generally require a shorter course and a lower dose, while skin infections call for a higher dose. Your prescriber will match the treatment length to the specific infection.
How It Works
Cefpodoxime is classified as a third-generation cephalosporin, which means it is effective against a wider range of bacteria than older antibiotics in the same family. It kills bacteria by interfering with the construction of their cell walls. Without intact cell walls, bacteria can’t survive, so the drug is bactericidal: it destroys the organisms outright.
This broad activity is why cefpodoxime works across so many infection types. It handles both the types of bacteria that commonly cause respiratory infections and the types responsible for urinary and skin infections. However, like all antibiotics, it does not work against viruses, so it won’t help with colds or the flu.
How to Take It for Best Absorption
Cefpodoxime comes as a tablet or an oral suspension (liquid). When taken as a tablet on an empty stomach, only about 50% of the drug actually reaches your bloodstream. Taking it with food significantly improves absorption, so most prescribers recommend you take it during or shortly after a meal.
Antacids and medications that reduce stomach acid can interfere with how well your body absorbs cefpodoxime. If you take an antacid or an acid-reducing medication, spacing it a couple of hours away from your cefpodoxime dose helps avoid this interaction.
Typical Doses by Infection
For adults and teenagers 12 and older, the dose varies based on what’s being treated. Urinary tract infections use the lowest dose at 100 mg every 12 hours. Pneumonia, bronchitis, sinusitis, ear infections, and throat infections typically call for 200 mg every 12 hours. Skin infections require the highest standard dose at 400 mg every 12 hours.
Children under 12 receive weight-based dosing in liquid form, calculated by their prescriber. The liquid suspension is flavored to make it easier for young children to take.
Common Side Effects
Cefpodoxime is generally well tolerated, but like most antibiotics, it can cause digestive side effects. Diarrhea is the most frequently reported issue. Nausea, abdominal discomfort, and headache also occur in some people. Vaginal yeast infections can develop because antibiotics disrupt the normal balance of microorganisms in the body.
These side effects are usually mild and resolve once the course of treatment ends. Severe diarrhea that persists, especially if it contains blood or mucus, is worth reporting to your prescriber promptly, as it can occasionally signal a more serious intestinal issue caused by bacterial overgrowth.
Penicillin Allergy and Cefpodoxime
Cefpodoxime is chemically related to penicillin, so people with penicillin allergies sometimes wonder whether it’s safe. The cross-reactivity rate for third-generation cephalosporins like cefpodoxime is less than 1% in people with confirmed penicillin allergies, which is considerably lower than the 1% to 8% range seen with older cephalosporins.
That said, anyone who has experienced a severe reaction to penicillin, such as anaphylaxis, severe skin blistering, kidney injury, or blood cell problems, should generally avoid all antibiotics in this chemical family. If you’ve had a mild reaction like a rash, your prescriber can help weigh the risks and may proceed with monitoring or suggest allergy testing first.
Antibiotic Resistance Considerations
Cefpodoxime remains highly effective against many common bacteria, but resistance patterns vary by region and by organism. In a large survey of bacterial samples collected between 2018 and 2021 in India, about 98% of the bacterium that causes many ear infections and bronchitis flare-ups remained susceptible to cefpodoxime. For the bacterium most commonly behind pneumonia, susceptibility was lower, around 64%, reflecting broader resistance trends in that region.
These numbers highlight why doctors choose antibiotics based on local resistance data and, when possible, on culture results that identify which drugs will work for your specific infection. Completing your full prescribed course, even if you feel better early, helps reduce the development of resistant bacteria.