Heavy alcohol use may worsen your natural ability to get hard and make Cialis less effective. 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. Does Cialis expire? Treated trusted source Brock, G. Advantages of Daily Cialis Taking Cialis on a daily basis offers the convenience of a daily routine and the ability to have sex spontaneously — without having to worry about taking medication right before. PDE5 is the enzyme that causes blood vessels to tighten.CIALIS for once daily use is a lower dose you take every day. • Do not take CIALIS more than one time each day. • Take one CIALIS tablet every day at about the same time of day. You may attempt sexual activity at any time between doses. • If you miss a dose, you may take it when you remember but do not take more than one dose per day. Teva Pharmaceutical said Thursday it is launching its generic version of Cialis in the U.S. The company has “first-to-file” status on the product, which means that for days it will have the. AdComplete the Online Consultation with our Doctor. Personalize Your Needs. If Appropriate, Get a Prescription for ED from RexMD®. Free Shipping AvailableFree Shipping · Real Doctors · Discreet Packaging · Personalized Plan/5 (3, reviews)Types: Hair Growth · MEDICATIONS · Immune Support · Erectile Dysfunction.