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Generic Name For Viagra

Generic Name For Viagra

What is sildenafil?

Sildenafil is a prescription drug. It comes in the form of a tablet and suspension (liquid). Both are taken by mouth. It also comes in an intravenous (IV) form, which is only given by a doctor.

Sildenafil oral tablet is available as the brand-name drugs Viagra and Revatio. It’s also available as a generic drug. Generic drugs usually cost less than the brand-name version. In some cases, they may not be available in every strength or form as the brand-name drug.

What are the side effects of sildenafil?

Approximately 15% of persons taking Viagra experience side effects. The most common side effects are:

  • facial flushing (1 in 10),
  • headaches (1 in 6),
  • stomach pain,
  • nasal congestion,
  • nausea,
  • dizziness,
  • rash,
  • urinary tract infections (UTIs)
  • diarrhea, and
  • an inability to differentiate between the colors green and blue.

What is the dosage for sildenafil?

The usual recommended dose is 25 to 100 mg 1 hour before sexual activity.

The maximum dose is 100 mg daily.

The elderly (over 65 years of age) should start at 25 mg before sexual activity.

Sildenafil is rapidly absorbed. Maximum observed plasma concentrations are reached within 30 to 120 minutes (median 60 minutes) of oral dosing in the fasted state. When sildenafil is taken with a high fat meal, the rate of absorption is reduced, with an average delay in the time to maximal concentration of 1 hour.

How it works

Sildenafil belongs to a class of drugs called phosphodiesterase type 5 (PDE5) inhibitors. A class of drugs is a group of medications that work in a similar way. These drugs are often used to treat similar conditions.

Sildenafil works in different ways, depending on the condition it’s being used to treat.

For ED: Sildenafil works by increasing blood flow to the penis. This helps you get or maintain an erection. Sildenafil only works for ED if you’re sexually aroused.

For PAH: Sildenafil works by relaxing the muscles and opening up the blood vessels in your lungs. This decreases the blood pressure in your lungs. Sildenafil slows down the progression of your illness. It also makes you more able to exercise.

Warnings/Precautions:

Confirm diagnosis. Cardiovascular disease (eg, MI, stroke, or life-threatening arrhythmia within 6 months; BP<90/50 or >170/110; unstable angina, LV outflow obstruction, impaired autonomic regulation of BP). Anatomical penile deformation. Predisposition to priapism. History of non-arteritic anterior ischemic optic neuropathy (NAION) or those with "crowded" optic disc. Retinitis pigmentosa. Advise patients to discontinue if sudden vision or hearing loss occurs. Patients for whom sexual activity is inadvisable or contraindicated. Bleeding disorders. Active peptic ulcer.

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