The Collaborative International Dictionary of English v.0.48:

Antisialagogue \An`ti*si*al"a*gogue\, a. (Med.)
   Checking the flow of saliva.
   [Webster 1913 Suppl.]

The Collaborative International Dictionary of English v.0.48:

Antisialagogue \An`ti*si*al"a*gogue\, n.
   A remedy against excessive salivation.
   [Webster 1913 Suppl.]