No, it’s not Harmless to choose an eighty-mg dose of Cialis. The maximum advisable day-to-day dosage of Cialis is 20 mg daily if you're taking it as necessary for ED. If you take Cialis day-to-day, the maximum dosage is 5 mg every day.Taking increased dosages of Cialis than this, like forty mg on a daily basis, raises your risk for severe Negativ