succedanea

/S AH0 K S IY1 D AH0 N IY1 AH0/
noun
  1. 1

    A substitute, replacement for something else, particularly of a medicine used in place of another.

Synonyms

Source: https://en.wiktionary.org/wiki/succedanea, https://en.wiktionary.org/wiki/succedaneum