Tadalafil

• Tadalafil, sold under the brand name Cialis.

Structure

• Tadalafil Chemical Structure –

Mode of action

• Same as Sildenafil

• It works by inhibiting the enzyme phosphodiesterase 5 (PDE5), which increases the breakdown of cGMP, an enzyme that controls blood flow in the penis. So, it increases blood flow in penis which results in erection of penis

Uses

• It is used to treat erectile dysfunction.