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• GC Hanford Manufacturing Company

Serious side effects have been reported with penicillin G potassium. See the “Drug Precautions” section.

Common side effects include:

• an allergic reaction, with symptoms of itching, redness and warmth of skin, and swelling that may occur
• itching of the skin
• skin rash

This is not a complete list of penicillin G potassium side effects. Ask your doctor or pharmacist for more information.

Call your doctor for medical advice about side effects. You may report side effects to the FDA at 1-800-FDA-1088.

Tell your doctor about all the medicines you take including prescription and non-prescription medicines, vitamins, and herbal supplements. Especially tell your doctor if you take:

• erythromycin (EES, Erythrocin)
• tetracycline antibiotics such as doxycycline (Vibramyin, Doryx), minocycline (Dynacin, Minocin), and tetracycline (Sumycin)
• probenecid (Probalan, Benemid)
• methotrexate (Rheumatrex, Trexall)
• birth control pills

This is not a complete list of penicillin G potassium drug interactions. Ask your doctor or pharmacist for more information.

Before taking penicillin G potassium, tell your doctor about all of your medical conditions. Especially tell your doctor if you:

• are allergic to penicillin G potassium any of its ingredients
• are allergic to penicillins
• have any other allergies
• have any kind of blood disorder
• have kidney problems
• have heart problems
• have asthma
• are pregnant or breastfeeding

Tell your doctor about all the medicines you take including prescription and non-prescription medicines, vitamins, and herbal supplements.

Take penicillin G potassium exactly as prescribed.

This medication is available in an injectable form to be given directly into a vein (IV), muscle (IM), into the lung spaces, or into the spine (IT) by a healthcare professional.

Take penicillin G potassium exactly as prescribed by your doctor. Follow the directions on your prescription label carefully.

The penicillin G potassium dose your doctor recommends will be based on:

• the condition being treated
• other medical conditions you have
• other medications you are taking
• how you respond to this medication
• your age

The recommended dose range for penicillin G potassium is 300,000 to 20,000,000 units daily.