The effects of Cenforce can last for up to 4 to 6 hours after ingestion, allowing for increased flexibility and spontaneity in sexual activity. However, the duration may vary based on individual factors. While Cenforce is generally safe and well-tolerated, it may cause side effects such as headache, flushing, indigestion, nasal congestion, dizziness, and changes in vision. It's important to use the medication as prescribed and to inform your doctor about any medical conditions you have and any medications you are taking to ensure safe and effective use.