corrigent

from The Collaborative International Dictionary of English v.0.48

Corrigent \Cor"ri*gent\ (k?r"r?--jent), n. [L. corrigens, p. pr.
   of corrigere to correct.] (Med.)
   A substance added to a medicine to mollify or modify its
   action. --Dunglison.
   [1913 Webster]