Cialis has the active ingredient Tadalafil, which lasts for as long as 36 hours in the body — perfect for a whole weekend. It is available in two variations, Cialis 36 Hour and Cialis Daily, and in four strengths; 2. When taking for Erectile Dysfunction, the recommended starting dose for Cialis 36 Hour is 10mg. It is usually worth shopping around for the lowest cost supplier, but always use a registered pharmacy to avoid fake medicines. In all cases only registered pharmacies can supply it.Cialis (branded Tadalafil) is an erectile dysfunction treatment that lasts up to 36 hours. Learn more about Cialis with our expert consultation service. Choose delivery to your . Get Cialis and Tadalafil pill online. Try the generic Cialis option for a fraction of the cost, after speaking with one of our online medical professionals. West Trenton, NJ . £ Save £ Was £ 4 UNI | £ per 1UNI Save 10 percent on Cialis Together 10mg Tablets Tadalafil 4 Tablets Free next day delivery on selected medicines .