Udenafil is used in the treatment of erectile dysfunction.
How Udenafil works Udenafil is a phosphodiesterase type 5 (PDE-5) inhibitor. It treats erectile dysfunction by increasing blood flow to the penis through the relaxation of muscles in the penile blood vessels. It facilitates the achievement of an erection only when the individual is sexually stimulated.
Common side effects of Udenafil include stiffness, headache, blurred vision, muscle pain, indigestion, flushing (a sense of warmth in the face, ears, neck, and trunk), and nosebleeds.