Mirtazapine original brand?

There isn’t a single universal “original” brand name for mirtazapine. It was developed by the Dutch company Organon and was marketed under different names in different countries:

- United States: Remeron (by Wyeth/Pfizer)
- United Kingdom and some other markets: Zispin (Organon)
- Some markets have used Avanza (brand name varies by country)

Since patents expired, mirtazapine is now widely available as a generic. If you tell me your country, I can confirm the exact brand name used there.