CMS VAPOUR RUB is used as a decongestant during common respiratory diseases (colds, coughs, simple bronchitis). It is used for cough suppression. To use: maybe used up to 3 times daily or as directed by your doctor. Simply rub a thick layer on your chest and throat. For muscle/joint minor aches and pains, Vicks VapoRub may be applied to the affected area not more than 3 to 4 times daily.