There are 11 words that end with 'otoxin'.
| biotoxin | exotoxin | autotoxin |
| cytotoxin | hemotoxin | endotoxin |
| mycotoxin | neurotoxin | picrotoxin |
| enterotoxin | tetrodotoxin | |
Note: These 11 words that end with 'otoxin' are found from the USA & Canada version of the tournament Scrabble word list.