Evidence supporting the use of: Hu Zhang
For the health condition: Colds (prevention)

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Synopsis

Source of validity: Traditional
Rating (out of 5): 2

Hu Zhang (虎杖), also known as Polygonum cuspidatum or Japanese knotweed, has a longstanding history of use in Traditional Chinese Medicine (TCM). In TCM, Hu Zhang is often employed to "clear heat," "remove toxins," and "dispel wind-dampness." It is traditionally used to treat a variety of ailments including infections, inflammation, and symptoms that correspond to what TCM practitioners might consider the early stages of a "wind-heat" type cold. However, there is limited direct scientific evidence supporting its effectiveness specifically for the prevention of common colds. Studies have identified that Hu Zhang contains compounds such as resveratrol, which exhibit anti-inflammatory and antioxidant properties. Some in vitro and animal studies suggest potential antiviral effects, but these findings have not been robustly translated into clinical trials for cold prevention in humans. Thus, the use of Hu Zhang for preventing colds is primarily rooted in traditional practices rather than validated by modern clinical research. Overall, while its use in TCM is established, the evidence from scientific studies remains preliminary and does not yet confirm effectiveness for this indication.

More about Hu Zhang
More about Colds (prevention)

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arabinogalactan
astragalus
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bamboo
basil
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beta-pinene
Beta-Glucan
black cumin
black currant
black pepper
black tea
blackberry
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camu camu
capsaicinoids
caterpillar mushroom
chamomile
chlorella
cinnamon
citrus bioflavonoids
citrus oil
citrus sinensis (proprietary)
clove
coconut milk
colostrum
turmeric
echinacea purpurea
elderberry
forsythia
garlic bulb
ginger
grape
greek mountain tea
onion
green tea
greens blend (proprietary)
Indian tinospora
honeysuckle
lactobacillus brevis
lemon
licorice root
lovage
marshmallow
moringa
mustard seed
nettle
spruce
orange
oregano
oregon grape
pear
phenolic compounds
pineapple
plantain
pollen
pomegranate
pumpkin
quercetin
reishi mushroom
rhizome
rose hips
rosemary
sage
schizonepeta
scrophularia root
sphaeranthus indicus
thyme
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vitamin C
vitamin D
seaweed
yeast
zinc
sarsaparilla
squawvine
tangerine
xanthium (cockleburs)
papaya
mugwort
nut grass
alpinia galangal
ferula assafoetida
pistacia integerrima gall
blackboard tree
peony
buckthorn
lemongrass
yerba santa
chrysanthemum
siler root
flowering quince
sweet flag
hyacinth bean
eucalyptus
menthol oil
aster root
goji berry
paw paw
Algae
indigo leaves
cayenne pepper
Aralia
Avens
Apple Cider Vinegar
Agastache
Ardisia
Acacia
Allicin
Abrus
Amomum
Asarum heterotropoides
Ajuga
Andrographolide
American Liverleaf
Asam gelugor
Andrographis
Asteracea
Allyl Sulfide
Allyl isothiocyanate
Alliin
Allium tuberosum
Amor seco
Arani
Atractylone
Black Seed
Bermuda Grass
Baikal Skullcap
Baphicacanthus cusia
Bidens pilosa
Blackthorn
Blepharis
Balsam
Bishop's Weed
Bayleaf
Black galingale
Bitter Grass
Bael
berry
Baccharoides anthelmintica
Bioflavonoids
black salt
Bee products
Black Nightshade
Bassia scoparia
Borneol
Camellia sinensis
Coconut
Chinese Silkvine
Curry leaf
Cinnamomum
Coriander
Capillary Artemisia
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Curcuminoid
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Capsaicin
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Cistus
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Celosia
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Dianthus
Dragonhead
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European Elder
Echinacea
Elder
Essential Oil Blend
European-Five Finger Grass
Fruit
Flavonoids
Fungus
Flavoglycosides
Goldthread
Gnaphalium
gamma-terpinene
Garlic
Gallesia
Glechoma hederacea
Galactooligosaccharides
Honey
Heal-All
Hedyotis
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Herb Robert
Horsemint
iridoids
Isatis
Ilex
Kokilaksha
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Lebbek
Litsea
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Laggera pterodonta
Luffa
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Lodhtree
Labrador Tea
Ligusticum
Mandarin
Mountain Pepper
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Mace
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Marigold
Mushroom
Nardostachys
Natsudaidai
Ophiopogon
Oroxylum indicum
Onosma bracteatum
Oxystelma
Phenylpropanoids
Prunus
Pepper
Paris polyphylla
Pelargonium
Pyrrosia
Piper retrofractum
Piper nigrum
Physalis angulata
Petiveria
Rubiaceae
Rooibos
Sichuan Lovage
Sicklepod
Sesbania
Sete sangrias
Smartweed
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Sesquiterpenes
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Salvia
Southern Tsangshu
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Sickle-leaf hare's ear
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Scabrous Gentian
saponins
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Terpenoids
Tea
Thymus
Tamaricaceae
Tayuya
Thaumatococcus daniellii
Tulbaghia
Thiosulfinate
Tremella
Umckaloabo
Vervain
Viola
White Tea
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Products containing Hu Zhang

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