Grade: B (Good Scientific Evidence)
Therapy	Specific therapeutic Use(s)
Boswellia	Asthma (chronic therapy)
Choline	Asthma
Coleus	Asthma
Ephedra	Bronchodilator (asthma)
Pycnogenol	Asthma
Grade: C (Unclear or Conflicting Scientific Evidence)
Therapy	Specific therapeutic Use(s)
Belladonna	Airway obstruction
Beta-carotene	Chronic obstructive pulmonary disease (COPD)
Black tea	Asthma
Borage seed oil	Asthma
Bromelain	Chronic obstructive pulmonary disease (COPD)
Butterbur	Asthma
Coleus	Breathing aid for intubation
Cordyceps	Asthma
Danshen	Asthmatic bronchitis
English ivy	Asthma
Eucalyptus oil	Asthma
Ginseng	Chronic obstructive pulmonary disease (COPD)
Green tea	Asthma
Kiwi	Respiratory problems (prevention)
Lactobacillus acidophilus	Asthma
L-Carnitine	Respiratory distress (adults)
Lutein	Lung function
Lycopene	Asthma caused by exercise
Melatonin	Sleep in asthma
Mistletoe	Respiratory disease (recurrent)
Omega-3 fatty acids, fish oil, alpha-linolenic acid	Asthma
Perilla	Asthma
Selenium	Asthma
Thymus extract	Asthma
Tylophora	Asthma
Vitamin B6	Asthma
Vitamin C	Asthma
Vitamin E	Respiratory infection prevention
Wild indigo	Respiratory tract infections
Zinc	Respiratory disease (respiratory papillomatosis)
Grade: D (Fair Negative Scientific Evidence)
Therapy	Specific therapeutic Use(s)
Evening primrose oil	Asthma
Lycopene	Lung function after exercise
Vitamin E	Asthma
Grade: F (Strong Negative Scientific Evidence)
Therapy	Specific therapeutic Use(s)
Arginine	Asthma
Traditional or Theoretical Uses which Lack Sufficient Evidence
Therapy	Specific therapeutic Use(s)
Abuta	Asthma
Aconite	Asthma
Adrenal extract	Asthma
Alfalfa	Asthma
Aloe	Asthma
American pennyroyal	Asthma
Anise	Asthma
Apple cider vinegar	Asthma
Apricot	Asthma
Arabinoxylan	Asthma
Arnica	Asthma
Ashwagandha	Asthma
Astaxanthin	Asthma
Astragalus	Asthma
Bacopa	Asthma
Bael fruit	Asthma
Bamboo	Asthma
Barberry	Respiratory disorders
Barley	Asthma
Belladonna	Asthma
Berberine	Respiratory disorders
Beta-carotene	Bronchial asthma (exercise-induced bronchoconstriction symptoms in young athletes)
Beta-glucan	Asthma
Betaine anhydrous	Asthma
Betel nut	Asthma
Betony	Asthma
Bitter melon	Respiratory infections
Black cohosh	Asthma
Black currant	Respiratory problems
Black horehound	Bronchial irritation
Bloodroot	Asthma
Blue flag	Respiratory problems
Boneset	Respiratory congestion
Boswellia	Chronic obstructive pulmonary disease (COPD)
Bromelain	Acquired immune deficiency syndrome (AIDS)
Buchu	Respiratory disorders
Bupleurum	Asthma
Burdock	Respiratory infections
California jimson weed	Asthma
Cardamom	Asthma
Cat's claw	Asthma
Chamomile	Asthma
Chaparral	Breathing problems
Choline	Respiratory distress (newborn syndrome)
Chondroitin sulfate	Respiratory ailments
Cinnamon	Asthma
Clove	Asthma
Codonopsis	Asthma
Coenzyme Q10	Asthma
Cordyceps	Respiratory disease
Cramp bark	Asthma
Damiana	Asthma
Desert parsley	Asthma
DHEA	Asthma
Dogwood	Respiratory ailments
Dong quai	Asthma
Elder	Asthma
Ephedra	Dyspnea (shortness of breath)
Essiac	Asthma
Eucalyptus oil	Chronic obstructive pulmonary disease (COPD)
Euphorbia	Respiratory disorders
Eyebright	Asthma
Feverfew	Asthma
Flaxseed and flaxseed oil	Bronchial irritation
Garcinia	Bronchodilator (relaxes the muscles of the airways)
Garlic	Asthma
Germanium	Asthma
Ginger	Asthma
Ginkgo	Asthma
Ginseng	Asthma
Goldenrod	Asthma
Goldenseal	Asthma
Gotu kola	Asthma
Grape seed	Asthma
Ground ivy	Asthma
Guarana	Asthma
Guggul	Asthma
Gumweed	Asthma
Hawthorn	Asthma
Holy basil	Asthma
Honey	Asthma
Honeysuckle	Asthma
Horny goat weed	Asthma
Horseradish	Respiratory disorders
Hyssop	Asthma
Iodine	Respiratory congestion
Jequirity	Asthma
Katuka	Asthma
Kava	Asthma
Khella	Asthma
Kiwi	Asthma
Labrador tea	Asthma
Lavender	Asthma
Licorice	Asthma
Lime	Asthma
Lycopene	Respiratory infections
Melatonin	Asthma
Milk thistle	Asthma
Mistletoe	Asthma
Morus nigra	Asthma
Mugwort	Asthma
Mullein	Asthma
Neem	Respiratory disorders
Noni	Asthma
Nux vomica	Respiratory ailments
Oleander	Asthma
Omega-3 fatty acids, fish oil, alpha-linolenic acid	Chronic obstructive pulmonary disease
Onion	Asthma
Oregano	Asthma
Pantothenic acid	Asthma
Passion flower	Asthma
Peppermint	Asthma
Perilla	Lung conditions
Pleurisy	Asthma
Polypodium leucotomos extract and anapsos	Asthma
Quercetin	Asthma
Raspberry	Asthma
Red clover	Asthma
Rehmannia	Asthma
Reishi mushroom	Asthma
Resveratrol	Chronic obstructive pulmonary disease (COPD)
Rooibos	Asthma
Rosemary	Bronchial asthma
Safflower	Bronchial irritation
Sage	Asthma
Saw palmetto	Asthma
Sea buckthorn	Asthma
Skunk cabbage	Asthma
Slippery elm	Lung problems
Squill	Asthma (with bronchitis)
Star anise	Respiratory congestion (inhaled)
Stinging nettle	Asthma
Tamarind	Asthma
Thyme	Asthma
Turmeric	Asthma
Valerian	Asthma
Vitamin A	Asthma
Vitamin B12	Asthma
Vitamin E	Bronchopulmonary dysplasia in premature infants
Vitamin O	Asthma
Watercress	Respiratory tract mucous membrane inflammation
White horehound	Asthma
White oak	Lung conditions
White water lily	Bronchial irritation
Wild yam	Asthma
Yerba santa	Asthma
Yew	Lung conditions