Viagra from Zentiva works effectively to stimulate your sex drive for up to 24-36 hours.
Thanks to its long-lasting effects, this product has become one of the most popular ingredients for treating erectile dysfunction and impotence. Viagra is a reversible inhibitor of phosphodiesterase type 5 on the action of cyclic guanosine monophosphate.
It is recommended to take only one 100mg dose at least 30 minutes before intercourse. Note that Viagra is known to maintain erection and have a much longer orgasm.