Fildena Double 200 mg is a high-strength medication used to treat ED in men. It contains Sildenafil Citrate, which is a PDE5 inhibitor. This medication helps increase blood flow to the penis during sexual stimulation, enabling a firm and lasting erection. Because of its double-strength dosage, Fildena Double 200 mg is generally prescribed only for men who do not respond well to lower doses of ED medications. It should be taken 30 to 60 minutes before sexual activity and is effective for about 4 to 6 hours. Sexual stimulation is still required for the drug to work.