William P. Hort
William Peter Hort (1799-1852) was an English born, American physician; one of the earliest clinical case reports in America on the use of oral charcoal as an antidote for acute poisoning
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Charles Bertrand
Charles AHA Bertrand (1777-1849) was a French physician; Least recognised for his self-experimentation with charcoal as an antidote for ingested poisonings.