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Side Effects of Penicillin VK

Penicillin VK is an antibiotic commonly used to treat bacterial infections. It works by interfering with the cell wall of infection-causing bacteria, which will then die. Most people begin to feel better soon after starting penicillin, but it's important to finish all the prescribed medication so the infection does not return.

  1. Gastrointestinal Side Effects

    • Some people taking Penicillin VK may experience mild diarrhea, an upset stomach nausea and vomiting, but these are no cause for concern. However, report severe or persistent diarrhea to your doctor.

    Oral Side Effects

    • Irritation of the throat and mouth may result from taking Penicillin VK. Another known side effect is developing a black, hairy tongue. These are no cause for concern.

    Skin Side Effects

    • In rare cases, people taking Penicillin VK may notice that their skin lesions become worse or they may experience unusual bruising or bleeding. Women may notice vaginal irritation or itching. These side effects could indicate a problem and should be reported to your doctor.

    Other Serious Side Effects

    • Other side effects of penicillin that should be reported to your doctor include fever, chills, a persistent sore throat and bloody urine or stools. These side effects could indicate a problem requiring medical treatment.

    Allergic Reactions

    • Allergic reactions to Penicillin VK are serious because people can quickly go into shock. Signs of an allergic reaction include swelling of the face or mouth, wheezing, chest tightness, hives and difficulty breathing. Seek medical help if you experience an allergic reaction.

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