What may interact with this medicine?

• cidofovir

This medicine may also interact with the following medications:

• certain antibiotics given by injection
• corticotropin
• cyclosporine
• digoxin
• flucytosine
• medicines for fungal infections
• medicines to treat cancer
• muscle relaxers
• pentamidine
• steroid medicines like prednisone or cortisone

This list may not describe all possible interactions. Give your health care provider a list of all the medicines, herbs, non- prescription drugs, or dietary supplements you use. Also tell them if you smoke, drink alcohol, or use illegal drugs. Some items may interact with your medicine.

What should I watch for while using this medicine?

What side effects may I notice from receiving this medicine?

• allergic reactions like skin rash or itching, hives, swelling of the lips, mouth, tongue, or throat
• burning, numbness, tingling
• change in amount or color of urine
• changes in hearing
• changes in vision
• chest tightness
• fever, chills
• irregular heart beat, blood pressure
• redness, blistering, peeling or loosening of the skin, including inside the mouth
• seizures
• short of breath, wheezing
• unusual bleeding, bruising
• unusually weak or tired
• yellowing of eyes, skin

Side effects that usually do not require medical attention (report to your doctor or health care professional if they continue or are bothersome):

• body aches, pain
• diarrhea
• headache
• flushing, redness of skin
• loss of appetite
• nausea, vomiting
• pain where injected
• stomach upset, pain
• weight loss

This list may not describe all possible side effects. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1- 800- FDA- 1088.