The benign but socially embarrassing problem of gustatory sweating and flushing (Frey syndrome) has been studied in the past in search of a simple but effective treatment. Twenty-two patients participated in clinical trials of glycopyrrolate on an investigational basis, 17 of which have been followed up for four to five years. Double-blind comparisons of the efficacy and side effects of topical scopolamine (solution and cream) and glycopyrrolate (roll-on lotion, solution, and cream) are also presented. The use of 1% glycopyrrolate roll-on lotion and cream were associated with an average of three days of complete control of gustatory sweating and a remarkably low incidence of side effects.
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