Is 20 mg Cialis too much?
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2.5mg, 5mg, 10mg, and 20mg "Cialis is available in four dosages. While the lower doses of 2.5mg and 5mg can be taken daily, the 10mg and 20mg doses are to be taken when needed." Cialis is a treatment for erectile dysfunction in men. ... The dose of Cialis refers to how much of the active ingredient 'tadalafil' is in them.