Did you know Viagra can do much more good to you? According to a new study one of the key ingredients present in Viagra can protect the heart in addition to enhancing sexual pleasure. The researchers of the study reported that long-term daily intake of Viagra can protect heart health in those suffering from heart disease at different stages without side effects. This ingredient blocks the enzyme PDE5 that prevents relaxation of smooth muscle tissue. According to Andrea Isidori from the Sapienza University of Rome Italy lead author of the study the key ingredient Phosphodiesterase-5 inhibitor (PDE5i) present in Viagra
