The difference between penicillin v potassium tablets and cefixime is mainly reflected in the molecular structure, antibiotic grade, indications and so on. 1. Molecular structure: although the chemical structure has a certain parent nucleus, the other chemical groups are different. Due to the difference in their chemical structure, it usually leads to the better stability of cefixime than penicillin V potassium tablets, cefixime is not easy to be hydrolyzed by the corresponding enzyme, so cefixime is more stable. 2. Antibiotic grade: Cefixime is a third-generation cephalosporin which is a restricted antibiotic, and penicillin V potassium tablets is a first-generation penicillin which is a non-restricted antibiotic, and the former kills more types of bacteria. 3. Indications: Cefixime dispersible tablets are mainly used for respiratory live digestive tract infections such as common coccus aureus infections, and penicillin V potassium tablets are mainly used for respiratory tract infections caused by streptococcus in general. Oral administration of penicillin V potassium tablets to pregnant women usually does not affect the fetus, while cefixime should not be used by pregnant women. The application of the drug should strictly follow the doctor’s instructions, and if you feel unwell during the course of taking the drug, you should stop taking the drug immediately and consult a doctor.