Sildenafil (By injection)
Vasodilator (About this – PubMed Health)
Uses of This Medicine
Sildenafil injection is used to treat the symptoms of pulmonary arterial hypertension. This is a type of high blood pressure that occurs between the heart and the lungs. When hypertension occurs in the lungs, the heart must work harder to pump enough blood through the lungs.
Sildenafil belongs to a group of medicines called phosphodiesterase 5 (PDE5) inhibitors. It works on the PDE5 enzyme in the lungs to relax the blood vessels. This will increase the supply of blood to the lungs and reduce the workload of the heart.
This medicine is available only with your doctor’s prescription.
Other uses (PubMed Health)
How To Use
Your doctor will prescribe your dose and schedule. This medicine is given through a needle placed in a vein.
A nurse or other health provider will give you this medicine.
Drugs and Foods to Avoid
Ask your doctor or pharmacist before using any other medicine, including over-the-counter medicines, vitamins, and herbal products.
Some medicines can affect how sildenafil works. Tell your doctor if you are using any of the following:Amlodipine, bosentan, doxazosin, itraconazole, ketoconazole, ritonavir Medicine for high blood pressure
When Not To Use
This medicine is not right for everyone. You should not receive it if you had an allergic reaction to sildenafil.
Tell your doctor if you are pregnant or breastfeeding, or if you have kidney disease, liver disease, pulmonary veno-occlusive disease, diabetes, bleeding problems, leukemia, multiple myeloma, sickle cell anemia, a stomach ulcer, or eye problems. Tell your doctor if you have heart disease, heart failure, high cholesterol, or high or low blood pressure. Also tell your doctor if you smoke.
Tell any doctor who treats you that you take sildenafil.
This medicine may cause the following problems:Low blood pressure (especially if taken with other medicines that lower blood pressure) Heart problems Painful or prolonged erection Vision or hearing problems
Possible side effects
Summary More details
Call your doctor right away if you notice any of these side effects:
Fast, slow, pounding, or uneven heartbeat
Painful erection or an erection that lasts longer than 4 hours
Sudden loss of vision
If you notice these less serious side effects, talk with your doctor:
Stuffy or runny nose
If you notice other side effects that you think are caused by this medicine, tell your doctor.
Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.
More side effects of this drug
Brand names include
There may be other brand names for this medicine.