Yes, Tadarise Pro 20 mg, which contains the active ingredient tadalafil, can potentially lead to a prolonged or unwanted erection. This condition is known as priapism. Priapism is a rare but serious side effect of medications like tadalafil, which is a phosphodiesterase type 5 (PDE5) inhibitor used to treat erectile dysfunction (ED) in men. Priapism is characterized by an erection that persists for an abnormally long time, usually lasting for more than four hours. This prolonged erection is not related to sexual stimulation and can be painful. If left untreated, priapism can damage the tissues in the penis and lead to permanent erectile dysfunction. If you experience an erection lasting more than four hours while using Tadarise Pro 20 or any other medication containing tadalafil, it's important to seek immediate medical attention. Priapism is a medical emergency that requires prompt treatment to prevent complications. To minimize the risk of priapism and other potential side effects, it's crucial to use Tadarise Pro 20 mg or any medication for ED under the guidance of a healthcare provider. They can provide information about proper dosage, usage instructions, and potential side effects. If you have concerns about side effects or experience any unusual symptoms, consult your healthcare provider for advice.