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What happens if I miss a dose (Nallpen, Unipen)?

Use the missed dose as soon as you remember. Skip the missed dose if it is almost time for your next scheduled dose. Do not use extra medicine to make up the missed dose.

What happens if I overdose (Nallpen, Unipen)?

Seek emergency medical attention or call the Poison Help line at 1-800-222-1222.

Overdose symptoms may include muscle spasms or weakness, muscle pain or twitching, numbness or tingly feeling, confusion, feeling light-headed, fainting, and seizure (black-out or convulsions).

What should I avoid while using nafcillin (Nallpen, Unipen)?

Antibiotic medicines can cause diarrhea, which may be a sign of a new infection. If you have diarrhea that is watery or bloody, stop taking nafcillin and call your doctor. Do not use anti-diarrhea medicine unless your doctor tells you to.

What other drugs will affect nafcillin (Nallpen, Unipen)?

Before using nafcillin, tell your doctor if you are using any of the following drugs:

• cyclosporine (Gengraf, Neoral, Sandimmune);
• a blood thinner such as warfarin (Coumadin); or
• an antibiotic such as doxycycline (Adoxa, Doryx, Oracea, Vibramycin), minocycline (Dynacin, Minocin, Solodyn, Vectrin), or tetracycline (Brodspec, Panmycin, Sumycin, Tetracap).

This list is not complete and other drugs may interact with nafcillin. Tell your doctor about all medications you use. This includes prescription, over-the-counter, vitamin, and herbal products. Do not start a new medication without telling your doctor.

Where can I get more information?

Your pharmacist can provide more information about nafcillin.

Remember, keep this and all other medicines out of the reach of children, never share your medicines with others, and use this medication only for the indication prescribed.

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