‘Herbal’ preparations for equine dermal neoplasms contain large amounts of zinc chloride

D. W. Ramey, Robert H Poppenga

Research output: Contribution to journalArticle

Abstract

This original study was performed to investigate the levels of zinc chloride (ZnCl2) in ‘herbal black salve’ preparations, purportedly containing an active ingredient of bloodroot, sometimes used to treat equine dermal neoplasms. Three samples of different ‘bloodroot’ preparations were tested. Zinc and other elements were measured by inductively coupled plasma atomic emission spectroscopy (ICP-AES). The chloride in the samples was partitioned into an aqueous solution and measured by ion chromatography (IC). The studied products contained between 11.6% and 25% ZnCl2. Veterinarians should be aware that ‘herbal’ or ‘black salve’ preparations intended for the treatment of equine cutaneous neoplasms may contain significant amounts of zinc chloride (ZnCl2), a caustic, corrosive chemical. Equine practitioners should also be aware that various international government agencies have warned against the use of black salve products in human cancer therapy.

Original languageEnglish (US)
JournalEquine Veterinary Education
DOIs
StateAccepted/In press - Jan 1 2018

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Plant Preparations
ointments
Sanguinaria
Sanguinaria canadensis
Skin Neoplasms
Ointments
Horses
Caustics
chlorides
zinc
horses
neoplasms
International Agencies
Government Agencies
Atomic Spectrophotometry
government agencies
Veterinarians
atomic absorption spectrometry
ion exchange chromatography
active ingredients

Keywords

  • horse
  • zinc chloride

ASJC Scopus subject areas

  • Equine

Cite this

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