비아그라는 무엇을 의미합니까?

Although the interaction involving other protease inhibitors and sildenafil hasn't been examined, their concomitant use is anticipated to improve sildenafil stages.Sildenafil enhances the result of NO by inhibiting phosphodiesterase type 5 (PDE5), which happens to be answerable for degradation of cGMP during the corpus cavernosum. Sildenafil has no

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