Assurans 20 mg contains Sildenafil, a phosphodiesterase type 5 (PDE5) inhibitor, prescribed to treat pulmonary arterial hypertension (PAH) in adults and children. When the pressure that right side of your heart is pumping against is referred to as PAH. Assurans cause a significant reduction of blood pressure in pulmonary arteries and an increase in cardiac out. Sildenafil is well tolerated with few drug interactions and does not require intensive monitoring, which makes it an ideal option treatment for PAH. It causes smooth muscle cell relaxation and reduces pulmonary arterial pressure as well as vascular resistance. The treatment improve exercise capacity and delays clinical worsening. Oral sildenafil is an effective and well-tolerated treatment for men dealing with erectile dysfunction (ED). It is known to restore erectile function in adult men and help them to enjoy satisfactory sexual activity. If you wish to use Assurans 20 mg to improve your penile erection, talk to your doctor. Please do not use it for ED until you get a prescription for it.