SMSNA Patients
Phosphodiesterase type 5 inhibitors (PDE-5is) are a group of oral medications that are used to treat erectile dysfunction (ED). These drugs are more commonly known by their commercial brand names like Viagra, Cialis, and Levitra, but they include any drug that functions in the same way. They work by relaxing the smooth muscles and dilating the blood vessels in the penis to allow for more blood...
