Fildena Professional, which contains sildenafil citrate, typically reaches its peak plasma concentration approximately 30 to 120 minutes after oral administration, with an average peak time around 60 minutes. This timeframe can vary depending on factors such as an individual's metabolism, age, diet, and overall health. Taking Fildena Professional on an empty stomach may lead to quicker absorption, while consuming it with a high-fat meal can delay its onset and peak concentration. Once it reaches its peak, users may experience maximum effectiveness in improving erectile function. It's crucial to follow prescribed dosages and consult a doctor for personalized advice and safe use.