Pregnant women with clear indications can take Penicillin V Potassium one tablet under the supervision of a physician, and the specific use of medication as prescribed by the doctor. Penicillin V potassium is a β-lactam antibiotic, commonly used dosage forms are tablets, capsules, granules, etc., clinically applicable to penicillin-sensitive strains of bacteria caused by mild and moderate infections. The drug needs to be contraindicated in people who are allergic to this product and other penicillins, people with positive reaction to penicillin skin test, and patients with infectious mononucleosis. Gastrointestinal reactions (such as epigastric discomfort, nausea, vomiting, diarrhea, etc.) and adverse reactions such as black hairy tongue are common after the use of the drug. The drug can pass through the placenta into the fetus, but there is no clear evidence that the drug will affect the fetus, it is generally recommended that pregnant women should use caution, the specific dosage of the drug and other matters should be carried out under the guidance of specialists, do not unauthorized use of drugs.