Is It Safe to Take Cialis Daily? Unlike other ED medications, such as Viagra® (sildenafil) and Levitra® (vardenafil), which work for four to five hours per dose, Cialis® (which contains the active ...

This article was reviewed by Martin Miner, MD. Cialis, which contains the active ingredient tadalafil, is one of the most popular medications for ED. It belongs to a class of drugs known as ...

NEW YORK (Reuters) - Eli Lilly and Co on Tuesday said U.S. regulators approved once-daily use of two low-dose forms of its Cialis anti-impotence drug, offering greater convenience for men expecting ...

Tadalafil is a generic version of the prescription drug Cialis. Doctors prescribe it to treat erectile dysfunction and benign prostatic hyperplasia. It helps relieve erectile dysfunction by increasing ...