Fildena Double 200 Mg The active component of the tablet, sildenafil citrate, facilitates better blood flow to the penile tissues, which makes it simpler to get and maintain a hard erection during intercourse. As prescribed by your physician, take Fildena 200mg Tablets with or without food. It is crucial to remember that this drug only helps an erection start when there is sexual excitement. It might take half an hour to an hour for the drug to start working. Pay strict attention to the directions on your prescription for the dose of sildenafil 200 mg.