Viagra’s journey to market involved several key dates:
1989: Pfizer scientists discover sildenafil’s vasodilatory properties during research on angina. 1991: Initial clinical trials begin, revealing unexpected effects. 1992-1996: Further trials confirm sildenafil’s efficacy in treating erectile dysfunction. Data meticulously gathered and analyzed. March 27, 1998: The FDA approves Viagra for sale in the United States. May 1998: Viagra launches commercially in the US, marking a significant moment in men’s health. Subsequent years: Global approvals and market expansions follow the US launch.
These dates highlight the research and regulatory steps necessary for Viagra’s introduction. Note that specific regional release dates varied.
- Each country had its own regulatory approval process. Marketing and distribution timelines differed based on various factors.
This timeline provides a concise overview of the significant milestones in Viagra’s development and market entry. For more precise regional launch details, consulting pharmaceutical archives and historical records is recommended.
