Tadfil 20 mg is primarily prescribed to treat ED, a condition characterized by difficulty achieving or maintaining an erection during sexual activity. Tadalafil, the active ingredient in Tadfil, works by increasing blood flow to the penis, facilitating an erection when a man is sexually stimulated. Common side effects of Tadfil 20 mg may include headache, indigestion, muscle aches, back pain, flushing, nasal congestion, and dizziness. These side effects are usually mild and temporary. https://www.genericday.com/tadfil-20-mg.html