Ecology is a vital field of study that examines the interdependence between living organisms and their environment. However, did you know that the use of Viagra can have adverse effects on the ecology of our rivers and streams? Studies have shown that Viagra, a popular medication for erectile dysfunction, can have a significant impact on aquatic ecosystems. When excreted by humans, the drug can make its way into waterways, where it can cause harm to fish and other aquatic life.