Check with your doctor immediately if any of the following side effects occur: Less common Arm, back, or jaw pain blurred vision chest pain, discomfort, tightness, or heaviness chills. Combined use could lead to additional lowering of blood pressure, possibly to unsafe levels. Different brands may not work the same way. Cialis will be available by prescription only. If your dose is different, do not change it unless your doctor tells you to do so. For further information contact your pharmacist or Eli Lilly and Company directly.Save £ Was £ 4 UNI | £ per 1UNI. Save 10 percent on Cialis Together 10mg Tablets Tadalafil 4 Tablets. Free next day delivery on selected medicines when you use code HEALTHFNDD, order by 8pm – online only. Helps you get and maintain an erection when you need it. Effective up to 36 hours.  · Cialis® also contains tadalafil. If you take too much tadalafil or take it together with these medicines, the chance for side effects will be higher. If you experience a prolonged erection for more than 4 hours or a painful erection for more than 6 hours, contact your doctor immediately. This condition may require prompt medical treatment to. 2 days ago · When taken once a day, CIALIS allows you to obtain an erection, when sexually stimulated, at any time point during the 24 hours of the day. Do not take once-a-day dosing and on-demand dosing.