Cialis 10 mg is the top drug that is used to treat Erectile Dysfunction in males. Cialis 10mg contains the active ingredient Tadalafil. This active ingredient helps increase blood flow to the penis and increases the sex hormone level and boosts the blood flow in the penis which allows men to get an erection during sexual activity. Cialis 10 is a brand-name oral tablet that’s also prescribed for benign prostatic hyperplasia (BPH). It belongs to a group of medications called phosphodiesterase 5 (PDE5) inhibitors.