Cialis Strong Pack contains three different strengths of Cialis - 20 mg, 40 mg and 60 mg. Cialis is the longest-lasting remedy for erectile dysfunction that makes your erections harder and allows having sex any time within the 36-hour period of efficiency. This pack is all about a choice of different dosages to determine the right one, as well as an opportunity to save money by buying in bulk. You should not take two different dosages of Cialis at the same time.