Febrifuge

I will prescribe a febrifuge to you.

...therein it differs not from the mode of operation, which we observe in the famous peruvian febrifuge.

Ah, my boy, you forget the card index! Librarians invented that soothing device for the febrifuge of their souls...

And, by goodness, the door was ajar into the hall, for Constance had slipped out to the nearest pharmacy in search of a febrifuge for her fever-bound lover.