Which preposition to use with purgatives

in Occurrences 2%

Simon Paulli relates some instances of the good effects of this purgative in dropsies: but cautions practitioners not to have recourse to it till after milder medicines have proved ineffectual; to which caution we heartily subscribe.

from Occurrences 1%

ALOE, a genus of succulent plants embracing 200 species, the majority natives of S. Africa, valuable in medicine, in particular a purgative from the juice of the leaves of several species.

on Occurrences 1%

The same physician used hellebore as a purgative on the daughters of King Proteus, who were labouring under hypochondriasis or melancholy.

of Occurrences 1%

Thus Plato has called Mathematical Demonstrations the Catharticks or Purgatives of the Soul, as being the most proper Means to cleanse it from Error, and to give it a Relish of Truth; which is the natural Food and Nourishment of the Understanding, as Virtue is the Perfection and Happiness of the Will.

Which preposition to use with  purgatives