Six Letters Re: Questions on Blood Clotting Agents
Sir: In reply to Bill H.’s questions about Ferric chloride to stop bleeding. In the U.S. Ferric Chloride is recognized as a styptic in veterinary medicine and should be used at a concentration of 10%. Lower concentrations are progressively less effective as a styptic but become useful as an astringent. Ferric subsulfate is currently used in the U.S. in human medicine as a styptic. I see it used frequently in our hospital in the surgery department. The typical use is at full strength or 20%. Alum is another potential styptic used at 0.5 to 5% solutions (yes, the stuff for …