Do not use more of it, do not use it more often, and do not use it for a longer time than your doctor ordered. Oral medicines for ED usually work well and cause few side effects. Read it again each time you refill your prescription in case there is new information. Missed Dose If you miss a dose of this medicine, take it as soon as possible. If you are taking tadalafil for erectile dysfunction on a regular schedule, take the missed dose as soon as you remember it.Overview of Cialis. Cialis (tadalafil) is a brand-name prescription medication. The Food and Drug Administration (FDA) has approved it for use in adult males.* It’s approved to: treat . Generic Cialis (tadalafil): $11 per 5 mg pill, $44 per 10 mg or 20 mg pill; Generic Cialis Daily (tadalafil): $8 per mg or 5 mg pill; A phone or video consultation is sometimes required for legal purposes. If approved, the provider will issue a prescription. Some platforms have a digital pharmacy that ships the medication to your home. Free Shipping · Discreet Packaging · Personalized Plan · Real DoctorsService Catalog: ED Pills, Erectile Dysfunction, Sexual Health and more.