Fildena (which contains sildenafil citrate) is absorbed primarily in the small intestine after oral administration. Here’s a clear breakdown: Stomach: After swallowing, Fildena enters the stomach, where it dissolves. Very little absorption occurs here because the stomach lining is not efficient for drugs like sildenafil. Small intestine (main site of absorption): Most of the drug is absorbed in the duodenum and jejunum (the upper parts of the small intestine). The large surface area and rich blood supply allow sildenafil to enter the bloodstream efficiently. Bioavailability: After Fildena , it undergoes first-pass metabolism in the liver, which reduces the amount reaching systemic circulation. The peak blood levels are usually reached within 30–120 minutes depending on food intake (high-fat meals can slow absorption). Key point: Fildena must reach the small intestine to be absorbed well — that’s why taking it on an empty stomach often makes it act faster than after a heavy meal.
