'antidotism' originates from English, specifically formed from the word 'antidote' plus the suffix '-ism'.

'antidote' came into English via Latin 'antidotum', which itself came from Greek 'antídoton' (from anti- 'against' + didónai 'to give'); 'antidotism' was formed in English by adding '-ism' to 'antidote' to denote a practice or doctrine.

Originally, the root word referred to 'that which is given against (a poison)'; over time the derived form 'antidotism' has been used to denote the practice or theory of using such remedies.