PDE5 inhibitors only work in the presence of nitric oxide, which is released during sexual arousal, so you will need to be aroused for Cialis to work. Your doctor will discuss the best treatment plan for you. Cialis will be available as oral tablets in 5mg, 10mg and 20mg strengths. Cialis side effects can happen and the drug can interact with other medications causing side effects such as headache, stomach upset, muscle pain, stuffy nose, flushing or dizziness. Generic Taladafil is available in a variety of shapes and colors as it is produced by several different labs.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. Coupons and discounts may be available. Price as of Nov. Since generic Cialis or tadalafil can be manufactured by other companies besides Eli Lilly — the manufacturer of Cialis. Cialis contains 10mg or 20mg of the active ingredient tadalafil. The effects of Cialis will last up to 36 hours. Other ED pills stay active in the body for hours. This offers huge flexibility between when you pop the pill and when you hit the bedroom. Cialis daily, taken every day, has a lower dose of mg or 5mg of tadalafil.