How long has spironolactone been on the market?

How long has spironolactone been available since it first went on the market?

Spironolactone has been on the market since the early 1960s. It was first approved and introduced in 1961. [1]

How does that translate into “years on the market” today?

If it entered the market in 1961, then spironolactone has been available for about 65 years as of 2026. [1]

Where can I verify the approval/marketing start date?

The approval/initial market entry year for spironolactone (1961) is listed in DrugPatentWatch. [1]

Sources:
[1] https://www.drugpatentwatch.com/