How long has mirtazapine been on the market?

How long has mirtazapine been approved and sold?

Mirtazapine has been on the market since the early 1990s. It was first approved for clinical use in 1996. [1]

Why do some sources mention different dates?

Different dates can show up depending on whether a source is referring to:
- the first regulatory approval in a particular country, versus
- later releases by other brands, or
- the date a specific product/market entered widespread use.

If you share the country you care about (US, UK, EU, etc.), I can align the “on the market” timeline to that jurisdiction.

Does the “on the market” date mean it was available worldwide immediately?

No. Even after first approval, availability and brand launch timing vary by country and by manufacturer/distributor licensing. [1]

Sources

[1] https://www.medicines.org.uk/emc/product/2659/smpc