comscore Generic versions of Viagra to hit market by year’s end | Honolulu Star-Advertiser
Hawaii News | Kokua Line

Generic versions of Viagra to hit market by year’s end

Question: Viagra was introduced in 1989, which makes it 28 years, and I don’t think it’s generic yet. Why not? Most drugs go off patent in 17 years. Even my doctor and pharmacist don’t know. Read more

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