Vardenafil(Levitra)

[ CAS NO.]   224785-91-5
[Molecular formula]  C23H33ClN6O4S
[ Property ]   It is white to off-white crystallinepowder, odorless，bitter taste, soluble in water and ethanol 
[ Contents ]   Above 99%. It’s used to improve men’s sexual ability and their life qulity. it takes 15 minutes to work after taking 20mg once (once a day). Soluble in water, it can be made to be oral liquors, health wines and soft capsules, bring no side effect. 
[ Characteristics ]  Comparing with the similar products, vardenafil takes less time to work, has persistent effect with high erection stiffness and security; The dose is little: according to the clinical dose, the effect of 5, 10, and 20mg of vardenafil is equal to that of 25, 50 and 100mg of Sildenafil. 
[ Pharmacokinetics ]  Penile erection is caused by the engorgement of the penis with blood. This engorgement occurs when the blood vessels delivering blood to the penis increase in size and increase the delivery of blood to the penis. At the same time, the blood vessels carrying blood away from the penis decrease in size