Levitra 10 mg is for oral use only. Swallow this medicine as a whole with water. Do not chew, crush, or break it. It is better to take this medication at a fixed time each day if it is indicated for everyday use. As with all medications, you may experience some side effects. Not everyone experiences it. This oral medication contains Vardenafil which relaxes the blood vessel walls and improves the blood flow to the penis. This helps achieve a firm erection during sexual intercourse. This medicine can taken with or without food. It is usually taken as and when needed, approximately 30 minutes to 1 hour before any sexual activity. The effects of this medicine last for around 5 hours. Sexual stimulation is necessary for this pill to work properly. This is not a cause for concern. However, it is so that you are aware of it. Headache, Dizziness, Flushing, Nasal congestion, Heartburn, Visual disturbances, Tinnitus. So before taking this pill consulate your doctor