Protective Action of Deglycyrrhizinized Liquorice on the Occurrence of Stomach Ulcers in Pylorus-Ligated Rats

Abstract
The effect of graded doses of a deglycyrrhizinized liquorice extract (d.Li.) was studied on the frequency of stomach ulcers and the secretion of gastric juice in pylorus-ligated rats. 25-50 mg of d.Li. given intraperitoneally reduced considerably the number of ulcers in comparison with the control group of rats without any significant changes in gastric secretion. Higher doses —100-200 mg — gave complete protection against the development of gastric ulcers and also reduced the output of gastric juice. The results give strong support for the existence of an ulcer-protecting principle in the d.Li.

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