Nallpen

Nafcillin is a prescription medication used to treat bacterial infections that cause pneumonia, urinary tract, skin, bone, joint, blood, heart valve infections, and infections in the brain. Nafcillin belongs to a group of drugs called penicillin antibiotics, which work by stopping the growth of bacteria in the body.

This medication is available in an injectable form to be given directly into a vein (IV) by a healthcare professional.

Common side effects include an allergic reaction, pain at the site of injection, and upset stomach.

Nafcillin is a prescription medication used to treat bacterial infections that cause pneumonia, urinary tract, skin, bone, joint, blood, heart valve infections, and infections in the brain.

This medication may be prescribed for other uses. Ask your doctor or pharmacist for more information.

Serious side effects have been reported with nafcillin. 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
• pain at site of injection
• upset stomach
• rash
• nausea
• vomiting

This is not a complete list of nafcillin 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:

• tetracycline antibiotics such as doxycycline (Vibramycin, Doryx), minocycline (Dynacin, Minocin), and tetracycline (Sumycin)
• cyclosporine (Neograf, Gengraf, Sandimmune)
• warfarin (Jantoven, Coumadin)
• probenecid (Probalan, Benemid)
• methotrexate (Rheumatrex, Trexall)
• birth control pills

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

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

• are allergic to nafcillin or to any of its ingredients
• are allergic to similar antibiotics (penicillins, cephalosporins)
• have a history of other allergies
• are allergic to corn or corn products
• have a history of asthma
• have kidney or liver problems
• are pregnant or breastfeeding

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

Nafcillin is usually administered by a healthcare provider in a medical setting making it unlikely for an overdose to occur. However, if overdose is suspected, seek emergency medical attention.