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Brief Information About Sildenafil Medication

Dec 05, 2020

Sildenafil is in a class of medications known as phosphodiesterase (PDE) inhibitors. Sildenafil diagnosed erectile dysfunction by increasing blood circulation to the penis at the time sexual stimulation. This medicine increased blood flow can cause an erection.

Brief Information About Sildenafil Medication

Trade name:

Viagra, Revatio, others



                        CYP3A4 (major route)

                        CYP2C9 (minor route)



Pregnancy category:

AU: B1

Routes of administration:

By Moth (Tablet)

ATC code:


Legal status:

AU: S4 (Prescription only)

Onset of action:


Elimination half-life: 3 to 4 hours
Excretion: Feces (approximate 80%), Urine (app. 13%)
Molar mass:


Sildenafil (Viagra) is used to diagnose erectile dysfunction (impotence, inability to get or keep an erection) in male. Sildenafil (revatio) is used to enhance the ability to exercise in adults with pulmonary arterial hypertension (PAH, high blood pressure (hypertension) in the vessels carrying blood to the lungs, causing shortness of breath, dizziness, and tiredness). Lower age youngsters should not usually take sildenafil, but in some cases, a physician may decide that sildenafil (revatio) is the best medication to diagnose a youngster’s condition. Sildenafil drug is in a class of medications known as phosphodiesterase (PDE) inhibitors. Sildenafil treats erectile dysfunction by enhancing the blood flow to the penis during sexual activity. This medication is much helpful for a man to increase blood flow and can cause an erection. Sildenafil medication helps to treat PAH by relaxing the blood vessels in the lung to allow blood to flow smoothly.

If you are using sildenafil medicine to cure erectile dysfunction, you should know that it is not much helpful to treat erectile dysfunction or increase sexual desire. It is only helpful to increase blood flow to the penis. This medicine does not prevent pregnancy or the spread of sexually transmitted diseases like: human immunodeficiency virus (HIV).

Sildenafil Online Store

A patient can buy sildenafil/Viagra over the internet. Be very careful if you do this as many websites or online pharmacies sell fake medicines. Online medicines are not always regulated and the ingredient in them can differ from one pack to another. They can cause some severe or serious side effects or may not be suitable for you.

It’s best to see your healthcare expert before buying medicines online. They know your medical condition and can discuss whether you might benefit from treatment.

If you chose to purchase sildenafil/Viagra over the online pharmacies, make sure:

  • Any online pharmacy should be registered with the General pharmaceutical council.
  • All physician or health care experts are registered with the general medical council.
  • Any online health care professional service is registered with the Care Quality commission.


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