Drug Notebook

FDA Alerts

  • Penicillin G benzathine (Bicillin® C-R, Bicillin® C-R 900/300), penicillin G procaine, and fixed combination containing penicillin G benzathine and penicillin G procaine (Bicillin® L-A) are administered by deep IM injection only and should not be injected IV or admixed with other IV solutions.
  • Prior to administration of penicillin G benzathine, penicillin G procaine, or fixed combination of penicillin G benzathine and penicillin G procaine, carefully read the warnings, adverse reactions, and dosage and administration sections of the prescribing information.
  • Inadvertent IV administration of penicillin G benzathine has been associated with cardiorespiratory arrest and death.

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(pen i SILL in)

What is the most important information I should know about penicillin G potassium ?

Do not use this medication if you are allergic to penicillin. Tell your doctor if you have ever had an allergic reaction to a cephalosporin antibiotic such as Ceclor, Ceftin, Duricef, Keflex, Lorabid, Omnicef, Spectracef, and others. Use this medication for the entire length of time prescribed by your doctor. Your symptoms may get better before the infection is completely treated. Penicillin G potassium will not treat a viral infection such as the common cold or flu.

After you have finished your treatment with penicillin G potassium, your doctor may want to do tests to make sure your infection has completely cleared up.

What is penicillin G potassium ?

Penicillin G potassium is an antibiotic that fights bacteria in your body.

Penicillin G potassium is used to treat many different types of severe infections, including strep and staph infections, diphtheria, meningitis, gonorrhea, and syphilis.

Penicillin G potassium is also used to prevent infections of the heart valves in people with certain heart conditions who need to have dental work or surgery.

Penicillin G potassium may also be used for other purposes not listed in this medication guide.

What should I discuss with my health care provider before using penicillin G potassium ?

Do not use this medication if you are allergic to penicillin. Tell your doctor if you have ever had an allergic reaction to a cephalosporin antibiotic such as Ceclor, Ceftin, Duricef, Keflex, Lorabid, Omnicef, Spectracef, and others.

Before using this medication, tell your doctor if you are allergic to any foods or drugs, or if you have:

If you have any of these conditions, you may need a dose adjustment or special tests to safely use penicillin G potassium.

FDA pregnancy category B. This medication 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. Do not use this medication without telling your doctor if you are breast-feeding a baby.
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