mirtazapine

Probably from m(ethyl) +‎ irt- (“inversion of tri-”) +‎ aza- (“nitrogen”) +‎ -apine (“psychoactive tricyclic compound”).

• (General American) IPA^(key): /mɪɹˈtæz.əˌpin/

mirtazapine (countable and uncountable, plural mirtazapines)

1. (pharmacology) An antidepressant drug C₁₇H₁₉N₃ taken orally especially to treat major depressive disorder. It is marketed under the trademark Remeron.

• “mirtazapine”, in Merriam-Webster Online Dictionary, Springfield, Mass.: Merriam-Webster, 1996–present.