Bitter drugs like horehound excite the bitter receptors on the tongue. This leads to an increase in the secretion of saliva and gastric juices, which stimulates appetite and promotes digestion. In addition, the contained marrubiin stimulates bile secretion (choleretic effect), which is also beneficial for digestion.
In animal studies, in addition to the bitter effect, analgesic and decongestant effects have been demonstrated, which are equally due to the marrubiin. The essential oil contained has expectorant and antispasmodic effects.
Side effects and interactions
Side effects are not expected when taking preparations made from horehound. However, overdose should be avoided, as this may stimulate the heart and uterus.
Also, interactions with other drugs and contraindications do not exist at present.
