Revatio® is utilized to deal with a exceptional disease identified as pulmonary arterial hypertension (PAH). Cialis® and generic Cialis® should not be utilised with Revatio® or with other PAH answers made up of sildenafil or some other PDE5 inhibitors (such as Adcirca [tadalafil])an erection that won't disappear (priapism). If you have an erect