Fildena Professional contains sildenafil citrate, the same active ingredient found in Viagra and other erectile dysfunction (ED) medications. It works by increasing blood flow to the ***** during ***** arousal, helping men with ED achieve and maintain an erection. However, Fildena Professional is specifically designed for men with erectile dysfunction caused by physical or psychological issues, such as poor blood flow to the *****, rather than being a treatment for low testosterone levels. How Fildena Professional Works Mechanism of Action: Sildenafil, the active ingredient in Fildena Professional, is a PDE5 inhibitor. It blocks the enzyme phosphodiesterase type 5 (PDE5), which breaks down a molecule called cGMP. The increased levels of cGMP allow the blood vessels in the ***** to relax, improving blood flow and facilitating an erection when ***** arousal occurs. Formulation: Fildena Professional is often available in a tablet form that is designed to be dissolved under the tongue for quicker absorption. This can result in faster onset of action compared to regular sildenafil tablets, which need to be swallowed and digested first. Its quicker absorption can make it effective within 15-30 minutes of administration, and the effects typically last around 4-6 hours. Low Testosterone and Erectile Dysfunction: Low testosterone (also known as hypogonadism) is a condition in which a man’s body doesn't produce enough of the hormone testosterone, which is critical for ***** health, among other functions. Symptoms of low testosterone can include: Reduced libido (decreased ***** desire) Fatigue Mood changes (e.g., depression or irritability) Decreased muscle mass Erectile dysfunction (ED), although not all men with low testosterone will experience ED. Low testosterone can affect erections in a few ways: Reduced libido may make it difficult to get aroused, which can reduce the desire for ***** activity.