The Tadalafil strength of Tadarise 20 mg is offered. Men with erectile dysfunction are treated with tadalafil. Tadalafil is a medication that is categorized as a phosphodiesterase 5 inhibitor. These medications inhibit the over-activation of phosphodiesterase type-5. One place this enzyme functions is in the penis. Certain people may experience negative effects from Tadarise 20, including headache, stomach, and back discomfort, muscle aches, flushing, runny or stuffy nose, or disorientation. Keep the medication out of direct sunlight, heat, and moisture by keeping it in a closed container at room temperature. Remain out of children's grasp.