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What happens if I miss a dose (Foscavir)?

Use the medication as soon as you remember the missed dose. If it is almost time for your next dose, skip the missed dose and use the medicine at your next regularly scheduled time. Do not use extra medicine to make up the missed dose.

What happens if I overdose (Foscavir)?

Seek emergency medical attention if you think you have used too much of this medicine.

Overdose symptoms may include numbness or tingling, thirst, drowsiness, confusion, urinating more or less than usual, muscle pain or weakness, fast heart rate, feeling light-headed, fainting, or seizure (convulsions).

What should I avoid while using foscarnet (Foscavir)?

Avoid getting this medicine in your eyes, as it may cause burning or irritation. If it does get into your eyes rinse with water and call your doctor.

What other drugs will affect foscarnet (Foscavir)?

Foscarnet can harm your kidneys. This effect is increased when you also use certain other medicines that can harm the kidneys. You may need dose adjustments or special tests when using any of these medications together with foscarnet.

• amphotericin B (Abcelet, Ambisome);
• pentamidine (Nebupent, Pentam);
• antiviral medications;
• any injected antibiotics;
• medicines to treat a bowel disorder;
• medication to prevent organ transplant rejection;
• pain or arthritis medicines; or
• HIV or AIDS medications such as ritonavir (Norvir) or saquinavir (Invirase).

This list is not complete and there may be other drugs that can interact with foscarnet. Tell your doctor about all your prescription and over-the-counter medications, vitamins, minerals, herbal products, and drugs prescribed by other doctors. Do not start a new medication without telling your doctor.

Where can I get more information?

Your pharmacist can provide more information about foscarnet.

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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