Originally intended as a treatment for angina, Viagra's efficacy for enhancing erections was discovered during clinical trials, leading to its fame as a potent erectile dysfunction medication. 

Additionally, Viagra has indirectly helped some endangered species, particularly certain species of wildlife that were previously hunted for their supposed aphrodisiac qualities such as tiger bones and rhinoceros horns. 

It has also been found to help flowers stand up straight and last longer. It was also used as a bribe during the war in Afghanistan to gain cooperation from tribal leaders and informants.