Tadalafil works by inhibiting the enzyme phosphodiesterase type 5, which increases blood flow to the penis during sexual stimulation. This improved blood flow helps men achieve and maintain an erection suitable for sexual activity.Dosage: Tadaflo 5 mg contains 5 milligrams of tadalafil per tablet. It is one of the lower doses available for tadalafil. The dosage prescribed may vary depending on individual factors such as the severity of ED, response to treatment, and any underlying health conditions.