The use of sildenafil, like other erectile dysfunction drugs, does not lead to physical dependence and does not cause the body to become completely unable to erect. Sildenafil belongs to a group of medicines called phosphodiesterase type 5 (PDE5) inhibitors, which improve blood flow to the penis, helping to achieve and maintain an erection. However, with long-term use of sildenafil, there may be a phenomenon known as tolerance. This means that after some time the body may become less responsive to the effects of the drug, which may require an increase in the dose to achieve the same effect. If there is tolerance, it is best to consult a doctor to adjust the dosage or consider other treatments for erectile dysfunction. It is also important to understand that erection problems can have various causes, such as psychological factors, hormonal problems, cardiovascular disease or neuropathy. Therefore, it is recommended to consult a doctor who can assess the cause of the difficulty and suggest appropriate treatments for you. I enclose a useful study: https://www.gdziepolek.pl/kategorie/leki-na-potencje