Kamagra, which contains sildenafil citrate, is used to treat erectile dysfunction. Priapism, a prolonged and often painful erection unrelated to sexual stimulation, is a potential side effect of medications like sildenafil. However, it is relatively rare. If you experience an erection lasting more than four hours while using Kamagra or any similar medication, it's crucial to seek immediate medical attention to prevent potential complications. Always follow your healthcare provider's guidance and medication instructions to minimize risks.