If you are taking tadalafil to treat erectile dysfunction, follow your doctor’s directions and the guidelines in this paragraph. Tadalafil is its active ingredient and is available as a generic drug. However, some states require a live video consultation. This allows the smooth muscles in the penis to relax and fill with blood. Some platforms have a digital pharmacy that ships the medication to your home, while others send an electronic prescription to your local pharmacy. People taking nitrates like nitroglycerin Nitrostat or isosorbide mononitrate Imdur should not take PDE5 inhibitors, as doing so could result in a dangerous drop in blood pressure.Cialis is approved by the FDA to treat erectile dysfunction (ED). Our medical team can prescribe Cialis 5mg, 10mg, and 20mg. The starting dose we generally recommend is 10mg. Tadalafil is the name for the active chemical ingredient in Cialis. PDE-5 inhibitors is the name of the group of medicines. Cialis Now Available as Generic Tadalafil: Here’s What You Need to Know – GoodRx We have good news for you: generic Cialis, used to treat erectile dysfunction (ED) and . Tadalafil, or generic Cialis, is most commonly used to treat erectile dysfunction (ED). However, it’s also used to treat benign prostatic hyperplasia (BPH) and pulmonary arterial hypertension.