Fildena 120 mg is a medication used to treat erectile dysfunction (ED) and contains sildenafil citrate as its active ingredient. Sildenafil is the key component that helps treat ED by improving blood flow to the penis. Here's a breakdown of the key ingredient: 1. Sildenafil Citrate: Primary Function: Sildenafil citrate is a phosphodiesterase type 5 (PDE5) inhibitor. It works by blocking the action of the PDE5 enzyme, which can degrade cyclic guanosine monophosphate (cGMP), a molecule responsible for relaxing the smooth muscles in the blood vessels of the penis. This relaxation allows increased blood flow to the penis during sexual arousal, helping men achieve and maintain an erection. Action Mechanism: When a man is sexually stimulated, sildenafil enhances the effects of nitric oxide (NO), a natural chemical that relaxes blood vessels and improves circulation. As a result, more blood flows into the penis, which helps to overcome ED. Inactive Ingredients (Excipients): While sildenafil citrate is the primary ingredient that treats ED, Fildena 120mg also contains several inactive ingredients that help with the tablet’s stability, absorption, and effectiveness. These may include: Microcrystalline Cellulose: Used as a binder and filler to help form the tablet. Lactose Monohydrate: A sugar used as a binder and to aid in tablet formation. Magnesium Stearate: A lubricant to help with the tablet's smooth manufacturing process and prevent it from sticking to machines. Croscarmellose Sodium: A disintegrant that helps the tablet dissolve in the stomach so that the active ingredient can be absorbed into the bloodstream. Titanium Dioxide: Used as a coloring agent. Other Colorants: Depending on the manufacturer, Fildena 120 mg may contain additional colorants or coatings to give the tablet its final appearance. The active ingredient in Fildena 120 mg that directly treats erectile dysfunction is sildenafil citrate, a PDE5 inhibitor. The inactive ingredients in the tablet serve supportive roles in ensuring the proper formation, stability, and absorption of the medication. If you're considering using Fildena 120 mg, it's essential to consult a healthcare provider to ensure it's safe and appropriate for your specific needs.