Foscarnet (Systemic)

Brand Names : Foscavir, phosphonoformic acid, PFA

Side Effects of This Medicine

Along with their needed effects, medicines like foscarnet can sometimes cause serious side effects such as kidney problems; these are described below. Foscarnet may also decrease the amount of calcium in your blood, causing you to have a tingling sensation around your mouth, and pain or numbness in your hands and feet. If this occurs, especially while you are receiving the medicine, notify your health care professional immediately.

Along with its needed effects, a medicine may cause some unwanted effects. Although not all of these side effects may occur, if they do occur they may need medical attention.

Check with your doctor immediately if any of the following side effects occur:

More common

Increased or decreased frequency of urination or amount of urine; increased thirst

Less common

Convulsions (seizures); fever, chills, and sore throat; muscle twitching; pain at place of injection; pain or numbness in hands or feet; tingling sensation around mouth; tremor; unusual tiredness and weakness

Rare

Sores or ulcers on the mouth or throat, penis, or vulva

Other side effects may occur that usually do not need medical attention. These side effects may go away during treatment as your body adjusts to the medicine. However, check with your doctor if any of the following side effects continue or are bothersome:

More common

Abdominal or stomach pain; anxious feeling; confusion; dizziness; headache; loss of appetite; nausea and vomiting; unusual tiredness or weakness

Other side effects not listed above may also occur in some patients. If you notice any other effects, check with your doctor.