Sildenafil is a phosphodiesterase (PDE-5) inhibitor. The relaxing of the blood vessel muscles in the male reproductive region results in improved blood flow and alleviation of erectile dysfunction. By increasing serotonin levels in the brain, sildenafil, a selective serotonin reuptake inhibitor (SSRI), improves control and lengthens the ejaculation process.
Phosphodiesterase type 5 (PDE5) in...
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