Have many uses, including slowing a fast heart rate and reli…

Have many uses, including slowing a fast heart rate and relieving spasms of the respiratory system and nasal discharge; may also be used to treat nausea and vomiting, motion sickness, and dizziness; some decrease gastric secretions and increase esophageal sphincter muscle tone; can be used to treat eye and urinary tract disorders, as well as neurological disorders.