However, the dose is usually not more than 80 mg 3 times a day. The recommended dosage for tablet and oral suspension formularies is 5 mg or 20 mg three times daily, 4 to 6 hours apart. Stop taking VIAGRA and call your healthcare provider right away if you have any sudden vision loss sudden hearing decrease or hearing loss. Do not use more of it and do not use it more often than your doctor ordered. Outline appropriate monitoring of sildenafil therapy in erectile dysfunction and pulmonary arterial hypertension. Pediatric Patients: Increased mortality with increasing sildenafil dose was observed in a clinical trial of pediatric patients with PAH. Most patients receive a prescription for 50 mg of oral sildenafil, taken as needed approximately 1 hour before sexual activity.Brand Names: Revatio, Viagra Sildenafil is used to treat male sexual function problems (impotence or erectile dysfunction-ED). Learn more about sildenafil oral. 1 Sildenafil is used to. There is also a generic version of Viagra available, under the name sildenafil, in 25mg, 50mg, and mg strengths. 3. Downsides. If you are between the ages of 18 and 60, take no other medication or have no other medical conditions, side effects you are more likely to experience include: In addition, taking sildenafil with too . Generic vs. brand-name Reducing long-term drug costs Financial assistance Next steps What is sildenafil? Sildenafil is a generic prescription medication. The Food and Drug Administration (FDA).

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