Do not chew on it or break it apart. The effect of Cialis Professional lasts longer and these tablets should be held under the tongue. An examination is required and tests may be needed. They can provide guidance on the right dosage and potential drug interactions. There is also an increase in side effects, such as changes in vision and changes in blood pressure. Is Cialis suitable for all men?Print Save Cialis Prices, Coupons and Patient Assistance Programs Cialis (tadalafil) is a member of the impotence agents drug class and is commonly used for Benign Prostatic Hyperplasia, and Erectile Dysfunction. The cost for Cialis oral tablet mg is around $ for a supply of 30 tablets, depending on the pharmacy you visit. stockcam / Getty Images What is generic Cialis? Generic Cialis is called tadalafil, which is the active ingredient in Cialis. Cialis is Food and Drug Administration (FDA) approved to treat. The brand version of Cialis can be expensive. Five tablets of Cialis 10 mg is about $ with GoodRx. The generic version is more affordable at about $6 for the same strength and quantity.