Many people believe it is only men who suffer from erectile dysfunction that use the drug and that it is only used during sex. Pulmonary hypertension ďż˝ Viagra has been used to help treat the disease pulmonary arterial hypertension (PAH). http://www.firewallfilter.com/ - buy viagra Once taken, the Viagra relaxes the arterial wall, leading to decreased pulmonary arterial resistance and pressure. Viagra is the brand name for the Sildenafil, which is used for the treating of many different conditions.