Zudena (udenafil) inhibits the secretion of an enzyme called phosphodiesterase type 5 (PDE5) in order to cease the degradation of a substance known as cyclic Guanosine Monophosphate. With this mechanism of action, Zudena helps the body to release nitric oxide, a substance that boosts blood flow throughout the system, including the penile organ. This way Zudena helps men to have an erection during sexual stimulation so they can sustain it for a long-lasting sexual activity.
These are a few common side effects of Zudena, which may subside eventually. However, seek medical attention if you have a prolonged erection – priapism – that lasts for more than three hours. Also, visit your nearest ER if you have experience chest pain or breathlessness.
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