Evidence supporting the use of: Licorice root
For the health condition: Colds (general)

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Synopsis

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

Licorice root (Glycyrrhiza glabra) has a long history of use in traditional medicine systems, including Traditional Chinese Medicine (TCM), Ayurveda, and various European herbal traditions, as a remedy for respiratory ailments such as colds, sore throat, and cough. Traditionally, it was believed to soothe mucous membranes, reduce throat irritation, and act as an expectorant. In TCM, licorice is often included in formulas to harmonize and enhance the effects of other herbs in cold remedies.

Scientific research does suggest that licorice root contains compounds such as glycyrrhizin and liquiritin, which exhibit anti-inflammatory, antimicrobial, and immunomodulatory effects in laboratory and animal studies. Some in vitro studies have shown that licorice extracts can inhibit the growth of certain viruses and bacteria. However, there is a lack of robust, high-quality clinical trials in humans specifically evaluating the efficacy of licorice root for treating or preventing the common cold. The evidence supporting its use for colds is thus mainly traditional, with some preliminary scientific rationale based on its constituent compounds, but not enough to be considered scientifically validated for this indication.

Overall, while licorice root’s use for colds is rooted in tradition and supported by theoretical mechanisms, clinical evidence in humans is limited. Individuals should also be aware of potential side effects and contraindications, especially with prolonged or high-dose use.

More about licorice root
More about Colds (general)

Other ingredients used for Colds (general)

allspice
aloe vera
green chiretta
anthocyanins
apple
arabinogalactan
astragalus
waterhyssop
bamboo
barberry
basil
benegut perilla (proprietary)
berry flavor
beta-pinene
black cumin
black currant
black garlic
black pepper
radish
black tea
blackberry
blueberry
bupleurum falcatum
burdock
bасора
capsaicinoids
carrot
cassia bark
caterpillar mushroom
chamomile
cinnamon
citrus oil
citrus sinensis (proprietary)
clove
coconut milk
colostrum
turmeric
dog rose
echinacea purpurea
elderberry
forsythia
garlic bulb
ginger
ginseng
gooseberry
grape
greek mountain tea
onion
green tea
greens blend (proprietary)
horseradish
Indian tinospora
honeysuckle
jujube
l-cysteine
lactobacillus fermentum
lactiplantibacillus plantarum
lactobacillus reuteri
lemon
licorice root
lovage
lychee
marshmallow
mastic gum
milk
moringa
mustard seed
nettle
spruce
orange
oregano
oregon grape
pear
perilla
phellodendron amurense
phenolic acids
pineapple
plantain
plum fruit
pomegranate
pumpkin
quail egg
quercetin
raspberry
redcurrant
reishi mushroom
rhizome
rose hips
rosemary
sage
schizonepeta
scrophularia root
spearmint leaf
sphaeranthus indicus
spirulina
thyme
vegetable blend (proprietary)
vitamin B
vitamin C
vitamin D
wasabia japonica
water
yeast
zinc
sarsaparilla
squawvine
boneset
tangerine
typhonium
xanthium (cockleburs)
hyssop
cardamom
atractylodes
papaya
capsicum
mugwort
Indian bael
neem tree
nut grass
alpinia galangal
ferula assafoetida
pistacia integerrima gall
commiphora
tinospora cordifolia
blackboard tree
bee pollen
peony
lingusticum wallichii
boxthorne
buckthorn
lemongrass
yerba santa
chrysanthemum
siler root
flowering quince
dodder
sweet flag
hyacinth bean
morinda
trichosanthes
zanthoxylum
birch
dulse leaf
purslane
fulvic acid
eucalyptus
menthol oil
aster root
peach
paw paw
abies spectabilis
horehound
Sichuan pepper
algae
indigo leaves
cayenne pepper
3-(4-hydroxy-3-methoxyphenyl)prop-2-enoic acid
Alcohol
Ash
Aralia
Avens
Apple Cider Vinegar
Agastache
Alpha-terpineol
Ardisia
Angelica
acacia
Allicin
Anamu
Abrus
Amomum
Asarum heterotropoides
Aconite
Ajuga
Andrographolide
Aerva lanata
American Liverleaf
Asam gelugor
Andrographis
Asteracea
Allyl Sulfide
allyl isothiocyanate
Alliin
Allium tuberosum
Amor seco
Arani
Atractylone
Bee Propolis
Black Seed
Bermuda Grass
Baikal Skullcap
Baphicacanthus cusia
Bidens pilosa
Blackthorn
Broussonetia
Blepharis
Balsam
Bishop's Weed
Bayleaf
Butea monosperma
Black galingale
Barleria
Bitter Grass
Bougainvillea
Bee hive
Bael
berry
Baccharoides anthelmintica
Banyan
Bur-Reed
Bioflavonoids
black salt
Bee products
Black Nightshade
Bombax
Borassus Palm
Buddha's Hand
Borassus aethiopum
Bitter principals
Bupleurum
Bassia scoparia
Belamcanda
Boerhavia diffusa
Borneol
Cumin
Camellia sinensis
Coconut
Chinese Silkvine
Curry leaf
Cinnamomum
Chinese Mountain Ant
Clerodendrum trichotomum
Cloudberry
coconut oil
Coriander
Chive
Carvacrol
Capillary Artemisia
Citron
Curcuminoid
Citrus
Cineole
Capsaicin
Cajuput
Chinese Raisintree
Chlorophytum
Cowherb
Curcumen
Cistus
Common madia
Curcuma
Cowslip
Calamus
Coin-leaf desmodium
Cinnamaldehyde
Costus
Carthamus
cola nut
Celosia
Culvers Root
Currant
Chrysophanics
Chondrus
Dianthus
Dodeca-2E, 4E-Dienoic Acid Isobutylamide
Dragonhead
Deoxyandrographolides
David's Milkberry
Desmodium
Dodeca-2E, 4E, 8Z, 10Z/Etetraenoic Acid Isobutylamide
Ephedra
European Elder
Eupolyphaga sinensis
English Horsemint
Eclipta
Echinacea
Elder
Essential Oil Blend
European-Five Finger Grass
Embelia
Flavonones
Goldthread
Garlic
Lotus
Little ironweed
Mustard
Mallow
Potato
Rose
Spikenard
Sandalwood
Squash
Sumac
Vervain
Zucchini

Other health conditions supported by licorice root

Abdominal Pain
Abrasions
Abscesses
Acid Indigestion
Acne
Addictions (general remedies for)
Addictions (tobacco smoking or chewing)
Addison's Disease
Adenitis
Adrenal Fatigue
Afterbirth Pain
Age Spots
Allergies (respiratory)
Amenorrhea
Anal Fistula or Fissure
Anemia
Appetite (deficient)
Asthma
Autoimmune Disorders
Bronchitis
Canker Sores
Chemotherapy (reducing side effects)
Chicken Pox
Cholera
Chronic Obstructive Pulmonary Disorder
Cirrhosis of the Liver
Cold Sores
Colds (antiviral)
Colds (decongestant)
Colds (general)
Colds (prevention)
Colds (with fever)
Colic (adults)
Colic (children)
Colitis
Colon (atonic)
Colon (spastic)
Congestion
Congestion (bronchial)
Congestion (lungs)
Congestion (lymphatic)
Congestion (sinus)
Constipation (adults)
Contagious Diseases
Convalescence
Cough (damp)
Cough (dry)
Cough (general)
Cough (spastic)
Cramps (menstrual)
Crohn's Disease
Croup
Cushing's Disease
Cytomealovirus
Dyspepsia
Eczema
Emphysema
Endometriosis
Enteritis
Epstein Barr Virus
Estrogen (low)
Fatty Liver Disease
Fever
Fibrosis
Gall Bladder (sluggish or removed)
Gall Stones
Gas and Bloating
Gastritis
Gingivitis
Glands (swollen lymph)
Goiter
Gonorrhea
Gout
Grave's Disease
Hair (loss or thinning)
Hair Care (general)
Halitosis
Hangover
Headache (general)
Headache (sinus)
Headache (tension)
Heart (weakness)
Hemorrhoids
Hepatitis
Hernias
Herpes
Hiatal Hernia
Hiccups
Hot Flashes
Hypotension
Hypothyroid
Impetigo
Indigestion
Infection
Infection (bacterial)
Infection (viral)
Inflammation
Inflammatory Bowel Disorders
Influenza
Injuries
Itching
Itching Ears
Jaundice (adults)
Jock Itch
Kidney Infection
Laryngitis
Leaky Gut Syndrome
Leprosy
Lesions
Leucorrhea
Liver Detoxification
Lungs (fluid in)
Lyme Disease
Lymph Nodes or Glands (swollen)
Malaria
Mastitis
Measles
Menopause
Menorrhagia
Menstrual Irregularity
Menstruation (scant)
Mental Illness
Metabolic Syndrome
Mononucleosis
Mood Swings
Morning Sickness
Mumps
Nausea and Vomiting
Nephritis
Nervous Exhaustion
Nervousness
Night Sweating
Nocturnal Emission
Oral Surgery
Ovarian Pain
Overacidity
Pertussis
Pleurisy
PMS (general)
Pneumonia
Poison Ivy or Oak
Rashes and Hives
Rosacea
Sore Throat
Ulcers