Wiktionary
toxicate
vb. (context transitive English) to metabolise a drug or other compound to produce a toxic metabolite
Usage examples of "toxicate".
But, given the existence of such an agent inside the house, that agent's most valuable function would have been to grant direct entree to her master, not to toxicate the wine on the sheer hope that enough people might chance to drink it to clear the field and give the count a clear shot at his goal.