November 29, 2015
Recommended Topic Related To:

Penicillin VK

"Every year, more than two million people in the United States get infections that are resistant to antibiotics and at least 23,000 people die as a result, according to a new report issued by the Centers for Disease Control and Prevention. The rep"...

Penicillin VK

Side Effects


Although the incidence of reactions to oral penicillins has been reported with much less frequency than following parenteral therapy, it should be remembered that all degrees of hypersensitivity, including fatal anaphylaxis, have been reported with oral penicillin. The most common reactions to oral penicillin are nausea, vomiting, epigastric distress, diarrhea, and black hairy tongue. The hypersensitivity reactions reported are skin eruptions (maculopapular to exfoliative dermatitis), urticaria and other serum-sicknesslike reactions, laryngeal edema, and anaphylaxis.

Fever and eosinophilia may frequently be the only reaction observed. Hemolytic anemia, leukopenia, thrombocytopenia, neuropathy, and nephropathy are infrequent reactions and usually associated with high doses of parenteral penicillin.

Read the Penicillin VK (penicillin v potassium) Side Effects Center for a complete guide to possible side effects


No information provided.

This monograph has been modified to include the generic and brand name in many instances.

Last reviewed on RxList: 12/28/2010

Side Effects

Report Problems to the Food and Drug Administration


You are encouraged to report negative side effects of prescription drugs to the FDA. Visit the FDA MedWatch website or call 1-800-FDA-1088.

Women's Health

Find out what women really need.