Liwei Daleweizhuang (PDE5 inhibitor): treats sexual dysfunction , improves urinary tract and increases cGMP concentration in lower body cells, leading to smooth muscle relaxation, increased blood flow, and erection . Levitra is a selective serotonin reuptake inhibitor ( SSRI ) that increases serotonin levels in the nervous system, thereby increasing the time it takes to ejaculate and improving ejaculation control.
Treating dysfunction and improving the urinary tract will increase the concentration of cGMP in lower body cells, leading to smooth muscle relaxation, increased blood flow, and erection.