Epidemial Powder.
Take Troches of Vipers 1 dram, Virginia Snake-root, Contrayerva, each half a dram mix.
It's not only prevalent against malignant Fevers, but also (being given before the Fit) commonly drives Agues. The Dose is from 1 scruple to 2 scruples.
Thomas Fuller
Pharmacopeia Extemporanea 1710