Antibiotic and antiseptic, especially effective on mucous membranes, urinary tract infection, diarrhea, and hemorrhoids digestive aid and expectorant this herb increases hypoglycemic effects in patients using insulin. possible effects of this herb include reducing effects of anticoagulants; interfering with or enhancing cardiac effects of beta blockers, calcium channel blockers, and digoxin; enhancing sedative effects of CNS depressants; and enhancing sedative effects of alcohol. Do not give to children