These PDE5 inhibitors may cause headache, flushing, drop in blood pressure, or other adverse effects. According to the FDA, generic medications contain the same active ingredients as brand names, meaning there’s no difference in effectiveness or safety. Why is it called generic Cialis? Still other online pharmacies specialize in medications for only a select few health concerns or conditions. Cialis tadalafil : This ED medication works with the same principle as Viagra, but lasts up to 36 hours. We will ask about your experience with generic Cialis as part of your visit.Unlike other ED meds, there’s no planning required allowing you to be spontaneous and ready anytime. For a cheaper and equally effective option, get the generic version. Get . Introduction If you’re looking at treatment options for erectile dysfunction (ED), you may want to learn more about Cialis and its cost. It’s a prescription drug used . Yes. 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 .