What are the effects and functions of sildenafil tablets?

Sildenafil tablets—commonly referring to sildenafil citrate tablets—exert several primary therapeutic effects, including improvement of erectile function, prolongation of erection duration, enhancement of sexual quality of life, alleviation of psychological stress, and adjunctive treatment of pulmonary arterial hypertension. The details are as follows:

1. Improvement of Erectile Function: Sildenafil citrate is a phosphodiesterase-5 (PDE5) inhibitor. By inhibiting PDE5 enzyme activity, it enhances nitric oxide release, leading to relaxation of the smooth muscle in the corpora cavernosa and increased local blood flow. This process enables the penis to achieve and sustain erection more readily in response to sexual stimulation, thereby effectively improving erectile function.

2. Prolongation of Erection Duration: In addition to enhancing erectile rigidity, sildenafil citrate also effectively extends erection duration. This allows patients to maintain erection throughout sexual activity, thereby increasing sexual satisfaction and pleasure.

3. Enhancement of Sexual Quality of Life: Sildenafil citrate not only aids in restoring erectile function but also contributes to overall improvement in sexual quality of life. By improving both erectile rigidity and endurance, it helps men regain confidence during intercourse, reduces feelings of inferiority and anxiety, and further promotes marital harmony.

4. Alleviation of Psychological Stress: Erectile dysfunction is often accompanied by psychological distress—including low self-esteem, anxiety, and depression. Sildenafil tablets indirectly help alleviate such psychological burdens by improving erectile function, thereby promoting mental well-being. This psychological benefit synergizes with its physiological effects to support comprehensive patient recovery.

5. Adjunctive Treatment of Pulmonary Arterial Hypertension: Beyond its use in treating erectile dysfunction, sildenafil citrate has also been proven effective in managing pulmonary arterial hypertension. It acts by relaxing pulmonary arterial smooth muscle, reducing pulmonary arterial pressure, and improving pulmonary vascular resistance—thus relieving clinical symptoms and enhancing quality of life in patients with pulmonary arterial hypertension.

During treatment with sildenafil citrate tablets, patients should closely monitor their bodily responses. If adverse reactions such as dyspepsia, facial flushing, or headache occur, they should promptly consult a physician.