Tazzle increases the flow of blood to the penis by relaxing the blood vessels there. Additionally, this medication relaxes the muscles in the bladder and prostate gland, which helps to alleviate the symptoms of an enlarged prostate gland. Take Tazzle exactly as prescribed by your physician. It is often taken once a day, at least 30-60 minutes before having intercourse. Drink a glass of water and swallow the tablet whole. Taking it with or without food is possible. Do not take more than the authorized dose in 24 hours. It’s most frequent side effects include headache, dizziness, muscle soreness, flushing, and impaired vision.