Key takeaways
Cefpodoxime (Vantin) and sulfamethoxazole/trimethoprim (Bactrim) are both antibiotics used to treat bacterial infections, but they belong to different classes and work in different ways. Cefpodoxime, available as a generic, is a cephalosporin antibiotic that kills bacteria by preventing them from forming a protective covering. It's typically taken twice a day and treats infections like strep throat, pneumonia, and UTIs. On the other hand, sulfamethoxazole/trimethoprim, also available as a generic, is a combination of a sulfonamide and an antifolate that stops bacteria from making folic acid, which is essential for their growth. This antibiotic is used for UTIs, ear infections, and certain types of pneumonia, and it can be taken as a tablet, liquid, or injection. While both medications can cause side effects like nausea and diarrhea, sulfamethoxazole/trimethoprim can also make your skin more sensitive to the sun and is not recommended during pregnancy. Additionally, sulfamethoxazole/trimethoprim should not be taken if you have a sulfa allergy, whereas cefpodoxime might not be suitable if you have a severe penicillin allergy.
