Eriacta 100 mg tablets contain Sildenafil citrate as its active component, which obstructs the action of the PDE5 enzyme and increases the product and exertion of nitric oxide in the penile towel. When sexually aroused, nitric oxide gets released to spark the grained enzyme cyclise, leading to the cyclic guano sine monophosphate (camp) elevation — increased camp influences the smooth muscles of the penis to relax and promote the inflow of blood into the penis to affect in an establishment penile construction.