Cialis Daily tadalafil : This low-dose Cialis works by increasing blood flow to the penis over time, making it easier to have an erection when aroused. Popping Cialis has some side effects—it increases your chances of limb, back and muscle pain. You’ll soon start receiving the latest Mayo Clinic health information you requested in your inbox. However, all medications come with risks. Though researchers continue to investigate new therapies and alternative treatments , PDE-5 pills are still the go-to treatment for most guys who need a little help getting it up. Embracing the Future with Cialis The transformative power of Cialis extends far beyond its traditional uses. Viagra is always taken as needed, usually an hour before having sex. · Cialis is a prescription drug used to treat erectile dysfunction and benign prostatic hyperplasia. Learn about its dosages, form, strengths, and more. For the as-needed dose, plan to take Cialis at least 30 minutes before sexual activity, but bear in mind it may take as long as 2 hours to take effect. Also, Cialis requires sexual stimulation to. Cialis is taken as an oral tablet, either as a low dose daily medication or as a higher-dose “on-demand” medication. It is the brand name for tadalafil, a medication also used .