Many alternative uses for the erectile dysfunction drug Viagra have been found since its release in 1998. While treating erectile dysfunction and pulmonary hypertension are its only FDA-approved uses, Viagra has been found to help treat altitude sickness, perk up wilting plants, and help women on antidepressants achieve orgasms more easily.

While Viagra has received the bulk of the attention for other uses, the FDA has approved a new use for Cialis.

Tadalafil, the active ingredient in Cialis, has been approved by the FDA to improve exercise ability in people with pulmonary arterial hypertension – a life-threatening disorder that causes high blood pressure in the lungs. For this use, tadalafil will be sold by Cialis manufacturer Lilly as Adcirca.

Similarly, Viagra’s manufacturer, Pfizer, introduced Revatio in 2005 to treat pulmonary arterial hypertension. Pfizer’s product contains Viagra’s active ingredient sildenafil.