Tazzle 10 FM is usually taken orally, with or without food. It's important to take it as directed by your healthcare provider, typically about 30 minutes before sexual activity. Common side effects may include headaches, indigestion, back pain, muscle aches, flushing, and nasal congestion. If you experience any severe or persistent side effects, it's essential to seek medical attention. Tadalafil is known for its longer duration of action compared to some other ED medications.