They enhance the effects of a chemical the body makes that relaxes muscles in the penis, called nitric oxide. Here’s what you can expect if your income exceeds that amount. Once-a-day use with 5 mg dosing or less may be considered for some patients with liver problems. Cialis is a brand name, and brand-name medications are generally more expensive than their generic counterparts. Your GP or urologist can offer two ways of treatment.Is Cialis available as a generic? Cialis is available as the generic drug tadalafil. A generic drug is an exact copy of the active drug in a brand-name medication and is considered just as safe. Daily generic Cialis (tadalafil) $8 for a daily mg or 5-mg tablet; Generic Cialis (tadalafil) $11 for a single 5-mg oral tablet; $44 for a single or mg oral tablet. These medicines all work well for ED. When choosing one, tell your doctor or other health care professional what your preferences are, such as cost, ease of use, how long the drug’s effects last and side effects. Generic versions of sildenafil, vardenafil and tadalafil are g: canada.