Revatio® is made use of to take care of a uncommon ailment termed pulmonary arterial hypertension (PAH). Viagra® and generic Viagra® should not be used with Revatio® or with other PAH methods made up of sildenafil or any other PDE5 inhibitors (for example Adcirca [tadalafil])an erection that won't go away (priapism). When you've got an erection