The Collaborative International Dictionary of English v.0.48:

Dose \Dose\, v. t. [imp. & p. p. Dosed; p. pr. & vb. n.
   dosing.] [Cf. F. doser. See Dose, n.]
   1. To proportion properly (a medicine), with reference to the
      patient or the disease; to form into suitable doses.
      [1913 Webster]

   2. To give doses to; to medicine or physic to; to give
      potions to, constantly and without need.
      [1913 Webster]

            A self-opinioned physician, worse than his
            distemper, who shall dose, and bleed, and kill him,
            "secundum artem."                     -- South
      [1913 Webster]

   3. To give anything nauseous to.
      [1913 Webster]