It is an emetic, diuretic, stimulant, and rubefacient.
"Enquire Within Upon Everything" by Anonymous
Associated Words: rubefacient, rubefaction.
"Putnam's Word Book" by Louis A. Flemming
Rubefacients are remedies which excite the vessels of the skin and increase its heat and redness.
"Burroughs' Encyclopaedia of Astounding Facts and Useful Information, 1889" by Barkham Burroughs
But, on the whole, heat is preferable to rubefacients, and moist to dry heat.
"A System of Practical Medicine by American Authors, Vol. I" by Various