No, it’s not safe to consider an eighty-mg dose of Cialis. The utmost advised everyday dosage of Cialis is 20 mg every day if you're taking it as required for ED. If you take Cialis day by day, the most dosage is 5 mg on a daily basis.Tadalafil had no major effect on the pharmacokinetics of theophylline.When tadalafil was administered to topics u