Helpful foods may be, onions, garlic, fruits and vegetables high in C. Vegetarian diets benefit those with Asthma. Hot foods like chili pepper 3xweek may help breathing. Caffeine in coffee can dilate bronchial tubes during an attack. A high fluid intake and inhalation of steam may help liquefy mucus and make it easier to be expelled from the air passages. Avoid smoking or smokers.
Thai ginger has same positive aspects.
Oil of eucalyptus and sandalwood massaged into back and chest is helpful. Frankincense is also good. A great deal of mucus requires myrrh. Corallium rubrum 6c for coughing discomfort. Exercise can be beneficial.