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Sildenafil Citrate Oral tablet [Pulmonary Hypertension]

What is this medicine?

SILDENAFIL (sil DEN a fil) is used to treat pulmonary arterial hypertension. This is a serious heart and lung condition. This medicine helps to improve symptoms and quality of life.

How should I use this medicine?

Take this medicine by mouth with a glass of water. Follow the directions on the prescription label. You can take this medicine with or without food. Take your doses at regular intervals about 4 to 6 hours apart. Do not take your medicine more often than directed. Do not stop taking this medicine except on the advice of your doctor or health care professional.

Talk to your pediatrician regarding the use of this medicine in children. Special care may be needed.

What side effects may I notice from receiving this medicine?

Side effects that you should report to your doctor or health care professional as soon as possible:

  • allergic reactions like skin rash, itching or hives, swelling of the face, lips, or tongue

  • breathing problems

  • changes in hearing

  • changes in vision, blurred vision, trouble telling blue from green color

  • chest pain

  • fast, irregular heartbeat

  • men: prolonged or painful erection (lasting more than 4 hours)

  • seizures

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

  • diarrhea

  • flushing

  • headache

  • indigestion

  • stuffy or runny nose

What may interact with this medicine?

Do not take this medicine with any of the following medications:

  • cisapride

  • methscopolamine nitrate

  • nitrates like amyl nitrite, isosorbide dinitrate, isosorbide mononitrate, nitroglycerin

  • nitroprusside

  • other sildenafil products (Viagra)

This medicine may also interact with the following medications:

  • certain drugs for high blood pressure

  • certain drugs for the treatment of HIV infection or AIDS

  • certain drugs used for fungal or yeast infections, like fluconazole, itraconazole, ketoconazole, and voriconazole

  • cimetidine

  • erythromycin

  • rifampin

What if I miss a dose?

If you miss a dose, skip the missed dose and take your next tablet at the regular time. Do not take double or extra doses.

Where should I keep my medicine?

Keep out of reach of children.

Store at room temperature between 15 and 30 degrees C (59 and 86 degrees F). Throw away any unused medicine after the expiration date.

What should I tell my health care provider before I take this medicine?

They need to know if you have any of these conditions:

  • eye or vision problems, including a rare inherited eye disease called retinitis pigmentosa

  • heart disease, angina, high or low blood pressure, a history of heart attack, or other heart problems

  • history of blood diseases, like sickle cell anemia or leukemia

  • kidney disease

  • liver disease

  • stroke

  • an unusual or allergic reaction to sildenafil, other medicines, foods, dyes, or preservatives

  • pregnant or trying to get pregnant

  • breast-feeding

What should I watch for while using this medicine?

Do not change the dose of your medicine without asking your doctor. Call your doctor if your medication is not working for you. This may be a sign that your condition has become worse.

Call your health care provider right away if you have any changes in vision.

Contact you doctor or health care professional right away if an erection lasts longer than 4 hours or if it becomes painful. This may be a sign of a serious problem and must be treated right away to prevent permanent damage.

If you experience symptoms of nausea, dizziness, chest pain, or arm pain after taking this medicine, you should discuss the episode with your doctor or health care professional as soon as possible.