The active component of this Filagra pill is sildenafil citrate, a phosphodiesterase type 5 (PDE56) inhibitor. This is how the drug works.
when a man feels arousal sexually.
It facilitates the penis's blood vessels relaxing. permitting a rise in blood flow.
This increases blood flow, which aids in achieving and maintaining an erection during sexual activity. For further information, speak with your family physician or an erectile dysfunction specialist. 

An inhibitor of PDE is Filagra Tablet. It functions by relaxing the muscles in the penile blood arteries, which increases blood flow to the penis. Follow your doctor's instructions on the dosage and length of use of this medication. Take it all in at once. Never shatter, eat, or crush it. You must take this tablet with meals.