Both drugs appear to be generally safe and well tolerated , with a similar side- effect profile to sildenafil .
两种药物似乎普遍安全和耐受性良好，有类似副作用剖面西地那非。The cardiovascular effects of sildenafil, in particular, have been extensively investigated.
心血管作用的西地那非，尤其是已广泛调查。Viagra, also known as sildenafil, is manufactured by Pfizer Inc.
伟哥，又名西地那非，由辉瑞公司生产。Sildenafil can depress pulmonary arterial hypertension.
西地那非能降低肺动脉高压。However, sildenafil prolongs the action of nitric oxide, which promotes upper airway congestion.
然而，因为西地那非延长了一氧化氮的作用，而这个可能引起上呼吸道充血（淤血）。Results Sildenafil citrate and tadalafil were detected in 3 batches. Conclusion The established method is accurate and reliable.
结果采用所建立的方法检测出3批中药制剂中含有枸橼酸西地那非和（或）他达拉非。Objective To explore the effect of sildenafil on NO and NO synthetase (NOS) after physical exercise at high altitude.
目的探讨西地那非对高原人体运动一氧化氮（NO）及其合酶（NOS）的影响。Sildenafil citrate is a phosphodiesterase type 5 (PDE5) inhibitor used clinically for the treatment of male erectile dysfunction.
枸橼酸西地那非是磷酸二酯酶-5（PDE5）的抑制剂，临床用来治疗勃起机能障碍。AIM: To investigate the effects of domestic sildenafil on corpora cavernosum of rabbit in vivo and in vitro.
目的：观察国产西地那非对整体和离体海绵体的作用。