Evidence supporting the use of: Terpenoids
For the health condition: Colds (decongestant)
Synopsis
Source of validity: Traditional
Rating (out of 5): 2
Terpenoids, a large and diverse class of naturally occurring organic chemicals derived from terpenes, are widely used in traditional medicine for the treatment of colds, particularly for their decongestant effects. Many essential oils containing terpenoids, such as eucalyptus oil (rich in eucalyptol), camphor, and menthol, have a long history of use in various cultures as remedies for respiratory symptoms. These compounds are often found in vapor rubs, inhalants, and herbal teas meant to relieve nasal congestion and ease breathing. The traditional rationale is largely based on the sensory effects—such as the cooling sensation or perceived opening of airways—rather than robust clinical evidence.
While some laboratory and limited clinical studies have suggested that certain terpenoids can provide mild symptomatic relief (for example, menthol can produce a subjective feeling of improved airflow), the evidence is not strong or consistent enough to fully validate their efficacy as decongestants by modern scientific standards. Most clinical guidelines do not recommend terpenoids as primary treatments for cold symptoms. However, their use persists due to strong cultural traditions and anecdotal reports of benefit.
In summary, the use of terpenoids as decongestants for colds is primarily justified by traditional practices, with only modest scientific support and limited clinical validation.
Other ingredients used for Colds (decongestant)
allspicewaterhyssop
basil
beta-pinene
black cumin
black currant
black pepper
radish
capsaicinoids
chen pi
citrus oil
clove
turmeric
echinacea purpurea
elderberry
forsythia
garlic bulb
ginger
greek mountain tea
green tea
horseradish
honeysuckle
lemon
licorice root
mint
mustard seed
oregano
peppermint oil
pineapple
pomegranate
quercetin
rhizome
rosemary
schizonepeta
spearmint leaf
thyme
vitamin C
wasabia japonica
water
zinc
hyssop
cardamom
atractylodes
capsicum
mugwort
alpinia galangal
ferula assafoetida
boxthorne
lemongrass
yerba santa
chrysanthemum
sweet flag
eucalyptus
menthol oil
abies spectabilis
horehound
Sichuan pepper
indigo leaves
cayenne pepper
Alcohol
Agastache
Alpha-terpineol
Asarum heterotropoides
Andrographis
Asteracea
allyl isothiocyanate
Allium tuberosum
Arani
Atractylone
Baphicacanthus cusia
Balsam
Bishop's Weed
Black galingale
Bitter Grass
berry
Bee products
Buddha's Hand
Borneol
Coconut
Clerodendrum trichotomum
Capillary Artemisia
Citron
Citrus
Cineole
Capsaicin
Cajuput
Cinnamaldehyde
Costus
Dragonhead
Ephedra
English Horsemint
Echinacea
Elder
Essential Oil Blend
Ephedrine
Fruit
gamma-terpinene
Gallesia
Mustard
salt
Sandalwood
Sweet Orange alcohol
Other health conditions supported by Terpenoids
Abdominal PainAcne
Allergies (respiratory)
Alzheimer's Disease
Anxiety
Anxiety Disorders
Arthritis
Asthma
Athlete's Foot
Bites and Stings
Boils
Bronchitis
Burns and Scalds
Cancer (natural therapy for)
Cancer (prevention)
Cancer Treatment (reducing side effects)
Canker Sores
Cardiovascular Disease
Chest Pain
Colds (antiviral)
Colds (decongestant)
Colds (general)
Colds (prevention)
Cough (dry)
Cough (general)
Cough (spastic)
Cuts
Dandruff
Depression
Dermatitis
Diabetes
Diarrhea
Digestion (poor)
Eczema