How Fildena Works to Treat Erectile Dysfunction Fildena is a widely used medication for treating erectile dysfunction (ED) in men. Its active ingredient is Sildenafil Citrate, the same compound found in Viagra. Fildena belongs to a class of drugs known as phosphodiesterase type 5 (PDE5) inhibitors, which help improve blood flow to the penis during sexual stimulation. Erectile dysfunction occurs when there is insufficient blood flow to the penile tissues, making it difficult to achieve or maintain an erection. Fildena works by inhibiting the PDE5 enzyme, which is responsible for breaking down cyclic guanosine monophosphate (cGMP) — a molecule that relaxes the blood vessels in the penis. By preventing the breakdown of cGMP, Fildena allows blood vessels to remain dilated, resulting in improved blood flow and a firmer, longer-lasting erection. https://www.dosepharmacy.com/fildena-150mg-tablet