Like all medications, Cenforce may cause side effects, though not everyone experiences them. Common side effects include headaches, facial flushing, dizziness, and digestive issues such as nausea or diarrhea. Some men may also experience nasal congestion, back pain, or muscle aches. These side effects are usually mild and temporary. However, more serious side effects can occur, such as sudden vision or hearing loss, chest pain, or an erection lasting more than 4 hours (priapism), which requires immediate medical attention. If you experience any severe or persistent side effects, contact your healthcare provider promptly to discuss your symptoms and possible alternatives.