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Opodeldoc is a sort of liniment invented, or at least named, by the physician Paracelsus.

Paracelsus's opodeldoc was a mixture of soap in alcohol, to which camphor and sometimes a number of herbal essences, most notably wormwood, were added. Paracelsus's recipe forms the basis for most later versions of liniment.[1]

Kurt Peters speculates that the curious name opodeldoc was concocted by Paracelsus from syllables from the words "opoponax, bdellium, and aristolochia." Opoponax is a variety of myrrh; bdellium is Commiphora wightii, which produces a similar resin; and Aristolochia is a widely distributed genus which includes Aristolochia pfeiferi, Aristolochia rugosa and Aristolochia trilobata that are used in folk medicine to cure snakebites. The name suggests that these aromatic plants may have figured in Paracelsus's recipe.[2]

The Pharmacopoeia of the United States (U.S.P.) gives a recipe for opodeldoc that contains:

  • Powdered soap, 60 grams;
  • Camphor, 45 grams;
  • Oil of rosemary, 10 milliliters;
  • Alcohol, 700 milliliters;
  • Water, enough to make 1000 milliliters

The name Old Opodeldoc was formerly used as a standard name for a stock character who was a physician, especially when played as a comic figure. Edgar Allan Poe used "Oppodeldoc" as a pseudonym for a character in the short story "The Literary Life of Thingum Bob, Esq."[2] Steer's Opodeldoc was a patent medicine that was widely promoted during Poe's life. As late as the early 1990s 'Epideldoc'(sic) was made up on demand by several pharmacists in the Northwest of England.


  1. ^ Michael Quinion, World Wide Words, May 27, 2006
  2. ^ a b Burton R. Pollin, "Poe’s Literary Use of 'Oppodeldoc' and Other Patent Medicines", Poe Studies, December 1971, vol. IV, no. 2, 4:30-32