The amount of medicine that you take depends on the strength of the medicine. Original Medicare does not cover Cialis. Different brands may not work the same way. Ask your doctor if you have any questions. This is up to the private insurers who offers Part D plans in your area, but most likely a plan will not cover Cialis for erectile dysfunction, even if it may cover for BPH. You may take this medicine with or without food. If you are a Mayo Clinic patient, this could include protected health information.The lowest GoodRx price for the most common version of Tadalafil (Cialis) is around $, 96% off the average retail price of $ Read more about Tadalafil (Cialis) . Pros and cons at a glance Below are some advantages and disadvantages of tadalafil. Pros available in a generic form, which is cheaper than brand-name drugs . Find prices and information on Erectile Dysfunction medications. Read our guide to Erectile Dysfunction. It is available in both brand and generic versions. Cialis is not covered by .