Fildena 100 mg should not be taken more than once per day. It is not suitable for everyone, especially those with certain medical conditions (like heart disease or low blood pressure) or who are taking medications that may interact with sildenafil citrate. Sildenafil citrate works by inhibiting the enzyme phosphodiesterase type 5 (PDE5) in the body. This action promotes the relaxation of blood vessels in the penis, allowing blood to flow more easily, which leads to an erection when sexually aroused. https://www.onemedz.com/product/fildena-100-mg/