枸橼酸西地那非是一种药物，化学名称是1-[4-乙氧基-3-[5-(6,7-二氢-1-甲基-7-氧代-3-丙基-1H-吡唑并[4,3d]嘧啶)]苯磺酰]-4-甲基哌嗪枸橼酸盐，为白色粉末。
该公司最为著名的药物要数万艾可。
万艾可（伟哥）在2009年的全球销售额达19.3亿美元，因此许多制药公司都渴望研发出下一个“伟哥”。
Pharmaceutical companies dream of developing the next Viagra, a product that had worldwide sales last year of about $1.93 billion.
有项高海拔自行车赛的试验，应用血管扩张剂以后(万艾可的化学名)，运动员每6公里可以缩短15%的时间。
A study of cyclists who took sildenafil citrate (the chemical name for Viagra) while racing at altitude found that it reduced their time over 6km by 15 per cent.
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