The maximum recommended dosage of Cialis is 20 milligrams (mg) once daily if you take it as needed to treat erectile dysfunction (ED). For all other Cialis-approved uses, the recommended maximum dosage is 5 mg once daily. For ED, Tadalafil can be taken either once per day or as needed before sexual activity, with dosages ranging from 2.5 milligrams (mg) to 20 mg. The usual daily Cialis dosage ranges from 2.5 mg to 5 mg by mouth, taken once daily. Most people start at the 2.5 mg dose, which may be increased to 5 mg based on how well it works for you. This article describes the dosages of Cialis, as well as its strengths and how to take it. To learn more about Cialis, including its cost and side effects, see this Cialis overview article. Typical starting dosage: The typical starting dose for Cialis in adults with erectile dysfunction is 10 mg, to be taken prior to sexual activity. Your healthcare provider may adjust this dose to either 20 mg for enhanced effectiveness or 5 mg for a lower dose, based on your individual response. Find the right Cialis dose for you, with 2.5mg, 5mg, 10mg and 20mg strengths available. Learn how often it can be taken, including daily dosage options. Detailed dosage guidelines and administration information for Cialis (tadalafil). Includes dose adjustments, warnings and precautions. Whether you’re considering Cialis for the first time or adjusting your dose, knowing how much to take and when can make a big difference in your results. This guide breaks down typical dosing schedules, how to adjust doses for specific conditions, and tips for safe use. How should I take Cialis? Cialis is usually taken only once per day. Follow all directions on your prescription label. Do not take this medicine in larger or smaller amounts or for longer than recommended. If you’re taking Cialis, your dosage may be 2.5 mg to 20 mg as needed before sexual activity or once a day. But if you’re taking Adcirca, your dosage is usually 40 mg a day.