Viagra
来自Big Physics
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1990s: probably suggested by words such as virile and virility .
wiktionary
Marketing name, perhaps from Sanskrit व्याघ्र(vyāghrá, “tiger”), or perhaps based on words such as vigour, virility, victory and Niagara.
etymonline
Viagra (n.)
1998, proprietary name of drug manufactured by Pfizer company.