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. 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. 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 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. Adults—2.5 milligrams (mg) once a day, taken at the same time each day, without regard for the timing of sexual activity. Your doctor may adjust your dose as needed. 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. 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. Learn how to take Cialis safely, including dosing options, what to avoid, and common side effects to watch for. Detailed dosage guidelines and administration information for Cialis (tadalafil). Includes dose adjustments, warnings and precautions. 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.