September 1971

A Teething Lotion Resulting in the Misdiagnosis of Diphenylhydantoin Administration

Author Affiliations

From the Department of Pediatrics, University of Colorado Medical Center, Denver.

Am J Dis Child. 1971;122(3):259-260. doi:10.1001/archpedi.1971.02110030117021

Constituents of a commercial teething preparation (Dr. Hand's teething lotion) are absorbed and can interfere markedly with measurement of serum diphenylhydantoin levels by the method of Svensmark and Kristensen.