Click here for an email preview. Dosing The dose of this medicine will be different for different patients. Pulmonary arterial hypertension initiated under specialist supervision for sildenafil By mouth 20 mg 3 times a day. If those steps don’t help, try talking with a professional counselor about your concerns. They include dutasteride Avodart, Jalyn and finasteride Propecia, Proscar.Sildenafil oral tablet is available as a brand-name drug and as a generic drug. Brand names: Viagra, Revatio. Sildenafil comes in three forms: an oral tablet, an oral suspension (liquid), and an. In combination with sexual stimulation, sildenafil works by increasing blood flow to the penis to help a man get and keep an test1.ru drug does not protect against sexually . Sildenafil is a medicine used to treat erection problems (erectile dysfunction). Sildenafil is also sometimes used to treat pulmonary hypertension (high blood pressure in the blood vessels that supply the lungs). If you have erection problems sildenafil works by temporarily increasing blood flow to your penis when you get sexually excited.