There are studies of high dose chronic viagra use in patients with pulmonary arterial hupertension. The high dose groups in these studies received 240mg a day.

There are studies of high dose chronic viagra use in patients with pulmonary arterial hupertension. The high dose groups in these studies received 240mg a day. I've had a brief look at the reported outcomes and there is no data on weightloss. This paediatric study of the same condition mentions that one patient withdrew due to weightloss: (http://m.circ.ahajournals.org/content/125/2/324.long http://m.circ.ahajournals.org/content/125/2/324.long) Of course, these patients are quite unwell, aren't trying to lose weight, and if sildenafil made their condition better might have had a better appetite and eaten more, so it's hard to draw too many conclusions.