Which preposition to use with laxative

in Occurrences 2%

'I gave a laxative in combination with a diffusible stimulant, and ordered doses of aconite and potassium iodide; I also applied strong sinapisms to each side, immediately behind the shoulders.

of Occurrences 2%

Laugh well (um): then we must know this, Sir, is your Lord costive of laughter, or laxative of laughter? Foul.

for Occurrences 1%

The taste of these negationists is an admirable shears to cleanse the extremities of genius; their enlightenment a great snuffer for the flame of enthusiasm; and their reason a mild laxative for immoderate passion and love.

Which preposition to use with  laxative