Benzyl Penicillin Potassium Ointment

Precaution:

You should not use penicillin G potassium if you are allergic to penicillin. Tell your doctor if you have ever had an allergic reaction to a cephalosporin antibiotic such as Ceftin, Cefzil, Omnicef, Keflex, and others.

To make sure penicillin G potassium is safe for you, tell your doctor if you have:

• asthma or a history of allergies;

• liver disease;

• kidney disease;

• heart disease;

• if you take a diuretic or "water pill"; or

• if you take any other antibiotics, including sulfa drugs.

Penicillin G potassium is not expected to be harmful to an unborn baby. Tell your doctor if you are pregnant or plan to become pregnant during treatment.

Penicillin G potassium can pass into breast milk and may harm a nursing baby. Tell your doctor if you are breast-feeding a baby.

Side effects:

Get emergency medical help if you have any of these signs of an allergic reaction: hives; difficulty breathing; swelling of your face, lips, tongue, or throat.

Penicillin G potassium may cause serious side effects. Call your doctor at once if you have:

• the first sign of any skin rash, no matter how mild;

• red or scaly skin;

• fever, chills, swollen glands, muscle or joint pain, fast heartbeats, general ill feeling;

• a light-headed feeling, like you might pass out;

• severe stomach pain, diarrhea that is watery or bloody;

• little or no urinating;

• bruising, severe tingling, numbness, pain, muscle weakness;

• seizure (convulsions); or

• unusual changes in mood or behavior.

• Common side effects of penicillin G potassium may include:

  • mild diarrhea;

  • headache;

  • black or hairy tongue; or

  • pain, swelling, bruising, or irritation around the IV needle.