Grade: A (Strong Scientific Evidence)
Therapy	Specific therapeutic Use(s)
Vitamin A	Measles (supportive agent)
Grade: C (Unclear or Conflicting Scientific Evidence)
Therapy	Specific therapeutic Use(s)
Alizarin	Viral infections
Astragalus	Anti-viral activity
Blessed thistle	Viral infections
Cranberry	Antiviral
L-Carnitine	Diphtheria (throat disease)
Turmeric	Viral infection
Vitamin A	Viral infection (Norovirus (NoV) infection)
Traditional or Theoretical Uses which Lack Sufficient Evidence
Therapy	Specific therapeutic Use(s)
Abuta	Rabies
Aconite	Dengue (break bone fever)
African wild potato	Viral infections
Agrimony	Antiviral
Alkanna	Antiviral (Alkanna orientalis)
Aloe	Antiviral
Amaranth oil	Antiviral
American pawpaw	Antiviral
Arabinogalactan	Antiviral
Astaxanthin	Antiviral
Astragalus	Cytomegalovirus
Baikal skullcap	Antiviral
Bamboo	Measles
Barberry	Antiviral
Belladonna	Measles
Berberine	Antiviral
Beta-glucan	Antiviral
Betel nut	Diphtheria
Bilberry	Antiviral
Bitter melon	Antiviral
Bitter orange	Viral infections (Rotavirus
Black cohosh	Measles
Black pepper	Measles
Blessed thistle	Rabies
Boneset	Antiviral
Boron	Antiviral
Bovine colostrum	Antiviral
Bulbous buttercup	Antiviral
Bupleurum	Antiviral
Burdock	Measles
Calendula	Antiviral
Capers	Antiviral
Carob	Antiviral
Cascara sagrada	Antiviral (herpes simplex virus II and vaccinia virus)
Cat's claw	Antiviral
Chamomile	Viral infection (flu-like symptoms or polio)
Chaparral	Antiviral
Chia	Antiviral
Chlorophyll	Antiviral
Chrysanthemum	Epstein-Barr virus
Cinnamon	Antiviral
Clove	Antiviral
Colloidal silver	Antiviral
Dandelion	Antiviral
Danshen	Antiviral
Desert parsley	Antiviral
Devil's club	Antiviral
Dong quai	Antiviral
Echinacea	Diphtheria
Elderberry and elder flower	Measles
Elecampane	Antiviral
Ephedra	Antiviral
Eucalyptus oil	Antiviral
Euphorbia	Antiviral
Eyebright	Antiviral
Garcinia	Antiviral
Garlic	Anti-viral
Germanium	Antiviral
Ginger	Antiviral
Goldenseal	Diphtheria
Grape seed	Antiviral
Grapefruit	Antiviral
Ground ivy	Antiviral
Hibiscus	Antiviral
Hops	Antiviral (anti-HCV
Horny goat weed	Antiviral
Hyssop	Antiviral
Jackfruit	Antiviral
Jequirity	Rabies (prevention)
Jewelweed	Measles
Kudzu	Measles
Lemon balm	Antiviral
Licorice	Coronavirus
Lingonberry	Antiviral
Liver extract	Antiviral
Macrobiotic diet	Antiviral
Maitake mushroom	Antiviral
Mangosteen	Anti-viral
Mullein	Antiviral
Noni	Antiviral
Nopal	Antiviral
Nux vomica	Rabies
Olive leaf	Antiviral
Passion flower	Epstein-Barr virus
Peony	Antiviral
Peppermint	Antiviral
Perilla	Antiviral
Pokeweed	Antiviral
Pomegranate	Mumps
PSK	Antiviral
Quassia	Antiviral
Quercetin	Antiviral
Raspberry	Antiviral
Reishi mushroom	Antiviral
Resveratrol	Antiviral
Sanicle	Antiviral
Saw palmetto	Epstein-Barr virus
Scotch broom	Diphtheria
Seaweed, kelp, bladderwrack	Antiviral
Shiitake	Antiviral
Sorrel	Antiviral
Spirulina	Antiviral
St. John's wort	Antiviral
Stevia	Antiviral (human rotavirus activity)
Stinging nettle	Antiviral
Sweet annie	Antiviral
Sweet basil	Antiviral
Tamanu	Antiviral
Tamarind	Antiviral
Thymus extract	Antiviral
Usnea	Antiviral
Valerian	Antiviral
Vitamin C	Antiviral
Vitamin O	Antiviral
White horehound	Rabies
White oak	Antiviral
Wild indigo	Antiviral
Wild yam	Antiviral
Willow bark	Antiviral
Yarrow	Measles
Yerba santa	Antiviral
Yew	Diphtheria
Yucca	Antiviral