What is tadalafil? Tadalafil powder is a very popular sex enhancer powder that is always offered under the brand name cialis. It is also known as cialis powder at times. Tadalafil benefits: Tadalafil powder, the active component in Cialis, acts similarly to sildenafil powder in Viagra, avanafil powder in Stendra, and vardenafil powder in Levitra. They are all classified as PDE5 inhibitors. 1. Erectile Dysfunction 2. Benign Prostatic Hyperplasia 3. Pulmonary Arterial Hypertension