Its presence and amount in the medicine determine the dosage and effectiveness. Cenforce 100 Credit Card dosage is given to patients who are suffering from a high level of ED and needs to be handled immediately. Otherwise, various other dosages of the same medicine are also available ranging from 10 mg to 300 mg. The medicine belongs to the family of PDE 5 drug inhibitor that improves the blood flow to the penile region of man by relaxing the wall of the penis. Whenever you feel the symptoms of erectile dysfunction then immediately consult a specialist, then according to the patient's health condition and previous health history.