Taking Fildena Double 200mg is a safe and effective way to treat erectile dysfunction. It is usually take orally with water, and it works best when you eat a low-fat diet. Take Fildena Double 200mg If you are taking Fildena Double 200mg to treat erectile dysfunction, it is best to take it about an hour before ***** activity. This gives the medicine time to work properly and provide you with an erection that lasts for the duration of *****. The drug works by relaxing the smooth muscles of the walls of the blood vessels, which increase blood flow to the *****. This increase blood flow helps to create a hard erection that can be maintaine for a long time. It also increases the release of cyclic guanosine monophosphate (cGMP), which is responsible for causing erections in men. Sildenafil citrate is a PDE-5 inhibitor, which means it inhibits the enzyme that is primarily responsible for regulating cGMP. This inhibiting action of the PDE-5 enzyme prevents cGMP from working and causes an increase in the amount of blood flow to the *****, which stimulates erection.