Vardenafil starts to work after 10~30 minutes of taking it, which needs to be related to the individual’s physique and the amount of medicine. Vardenafil is suitable for the treatment of male penile erectile dysfunction drugs, can maintain erection hardness and erection time, the general onset of action time is relatively fast, about 10 ~ 30 minutes to start working. However, it should be noted that some people may experience symptoms such as flushing and dizziness after taking the drug, which will disappear on their own. It is contraindicated for people who are allergic to any of the ingredients in this product, patients who are taking any form of nitrates, guanylate cyclase stimulators, women, children and other people. It should be taken correctly under the guidance of a doctor to avoid taking it without authorization and causing unnecessary damage to the body. Usually develop good living habits, quit smoking and prohibit alcohol, to have too much psychological pressure, keep a relaxed mood.