Cialis 60 mg dosage for treating erectile dysfunction (ED). The standard doses of Cialis, which contains tadalafil, typically range from 2.5 mg to 20 mg. For most men, the recommended starting dose for as-needed use is 10 mg, taken before sexual activity, and can be adjusted based on effectiveness and tolerability. The maximum recommended dose is 20 mg per day. Taking a higher dose like 60 mg can significantly increase the risk of side effects, such as headaches, flushing, dizziness, and even more serious issues like priapism, which is a prolonged and painful erection. Cialis works by increasing blood flow to the penis, helping men achieve and maintain an erection during sexual stimulation. Its effects can last up to 36 hours, making it a popular choice for those who want flexibility in their sexual activities.