What is Silagra 100 Mg Silagra 100 mg pills are manufactured by Cipla. Each Silagra tablet contains the same ingredients as Pfizer's Brand Medication. Silagra helps Impotence (ED) person in having and sustaining an erection. The main ingredient helps arteries in the penis to relax and expand. Because of that blood flows in the penis resulting in hardness of penis due to which amount of blood flowing out of the penis gets reduced and penis attains an erection which lasts longer.