Filagra Oral Jelly contains sildenafil citrate, a well-known phosphodiesterase type 5 (PDE5) inhibitor. This compound works by relaxing muscles in the blood vessels, thereby increasing blood flow to particular areas of the body, including the penis. This enhanced blood flow helps men with ED to achieve and sustain an erection suitable for sexual activity. The oral jelly formulation offers a quicker onset of action compared to traditional tablets, making it a preferred choice for many.