Grade: C (Unclear or Conflicting Scientific Evidence)
Therapy	Specific therapeutic Use(s)
Betel nut	Stimulant
Coenzyme Q10	Chronic fatigue syndrome
DHEA	Chronic fatigue syndrome
Evening primrose oil	Chronic fatigue syndrome/post-viral infection symptoms
Folate	Chronic fatigue syndrome
Ginseng	Fatigue
Glyconutrients	Failure-to-thrive
Iron	Fatigue in women with low ferritin levels
Kiwi	Energy enhancement
L-Carnitine	Fatigue
Liver extract	Chronic fatigue syndrome
Sandalwood	Alertness
Selenium	Fatigue
Taurine	Energy
Vitamin B12	Fatigue
Grade: D (Fair Negative Scientific Evidence)
Therapy	Specific therapeutic Use(s)
Spirulina	Chronic fatigue syndrome
Traditional or Theoretical Uses which Lack Sufficient Evidence
Therapy	Specific therapeutic Use(s)
Abuta	Stimulant
Ackee	Stimulant
Aconite	CNS stimulant
Adrenal extract	Exhaustion
African wild potato	Chronic fatigue syndrome
Aloe	Chronic fatigue syndrome
Alpinia	Stimulant
Amaranth oil	Energy
American pennyroyal	Stimulant
Apple cider vinegar	Fatigue
Arabinogalactan	Fatigue
Arabinoxylan	Chronic fatigue syndrome
Arnica	CNS stimulant
Asarum	Stimulant
Ashwagandha	Fatigue
Astragalus	Chronic fatigue syndrome
Bacopa	Fatigue
Bay leaf	Stimulant
Berberine	Fatigue
Betaine anhydrous	Fatigue
Bilberry	Chronic fatigue syndrome
Bitter orange	Energy enhancement
Black horehound	Stimulant
Blue flag	Exhaustion
Boneset	Stimulant
Boxwood	Fatigue
Buchu	Stimulant
Bupleurum	Fatigue
Calendula	Fatigue
Cardamom	Stimulant
Cat's claw	Chronic fatigue syndrome
Chicory	Stimulant
Choline	Energy
Copper	Fatigue
Cordyceps	Fatigue
Cornflower	Stimulant
Damiana	Energy
Dandelion	Chronic fatigue syndrome
Datura wrightii	Stimulant
Desert parsley	Chronic fatigue syndrome
DHEA	Fatigue
Dong quai	Fatigue
Ephedra	Alertness
Essiac®	Chronic fatigue syndrome
Eucalyptus oil	Alertness
Fenugreek	Energy enhancement
Fo-ti	Energy
Garlic	Fatigue
Germanium	Chronic fatigue syndrome
Ginger	Energy metabolism
Ginkgo	Fatigue
Ginseng	Chronic fatigue syndrome
Goldenseal	Chronic fatigue syndrome
Gotu kola	Energy
Grape seed	Chronic fatigue syndrome
Green tea	Stimulant
Ground ivy	Stimulant
Guarana	Fatigue
Hoodia	Energy improvement
Horny goat weed	Fatigue
Horseradish	Stimulant
Hyssop	Exhaustion
Iodine	Energy level enhancement
Iron	Fatigue
Khat	Fatigue
Lady's slipper	Stimulant
Lavender	Fatigue
Lemon balm	Chronic fatigue syndrome
Lemongrass	Exhaustion
Licorice	Chronic fatigue syndrome
Lime	Stimulant
Lousewort	Fatigue (muscular)
Lovage	Stimulant
Maca	Chronic fatigue syndrome
Mangosteen	CNS stimulant
Mastic	Stimulant
Mistletoe	Exhaustion
Mugwort	Fatigue
Muira puama	CNS stimulant
Noni	Chronic fatigue syndrome
Octacosanol	Fatigue
Omega-3 fatty acids, fish oil, alpha-linolenic acid	Chronic fatigue syndrome (postviral fatigue syndrome)
Pantothenic acid	Chronic fatigue syndrome
Peony	Chronic fatigue syndrome
Pokeweed	Fatigue
Raspberry	Exhaustion
Rehmannia	Fatigue
Reishi mushroom	Fatigue
Rhodiola	Chronic fatigue syndrome
Riboflavin	Fatigue
Saccharomyces boulardii	Fatigue
Safflower	Stimulant
Sea buckthorn	Fatigue
Seaweed, kelp, bladderwrack	Fatigue
Shiitake	Chronic fatigue syndrome (CFS)
Skunk cabbage	Stimulant (gastrointestinal)
Spirulina	Energy booster
Spleen extract	Fatigue
St. John's wort	Fatigue
Star anise	Stimulant
Stinging nettle	Exhaustion
Taurine	Alertness
Thymus extract	Fatigue
Tribulus	Chronic fatigue syndrome
Valerian	Fatigue
Vitamin B12	Chronic fatigue syndrome
Vitamin E	Energy enhancement
Vitamin O	Energy booster
Watercress	Stimulant
Wheatgrass	Energy enhancement
White water lily	Exhaustion
Wild yam	Energy improvement
Yellow dock	Chronic fatigue syndrome
Yohimbe bark extract	Exhaustion