|See Also||Botanical Monographs|
Thuja (Thuja occidentalis) is best known for its use in treating warts, yet it is also effective in a number of respiratory and genitourinary conditions. To explore the characteristics, medicinal uses and prescribing considerations of this herb in more detail, check out the references indicated., 
- Common Names: Yellow cedar, Arbor vitae, Tree of life
- Family: Cupressaceae
- Habitat: Thuja is native to eastern North America, especially Canada where it prefers cold swamps and soils. It is often cultivated for a wind break.
- Parts Used: Leaf
- Constituents: Volatile oils, pinipicrin (bitter glycoside similar to quercetin), tannins
- Medicinal Actions: diuretic, genitourinary antiseptic, emmenagogue, antihelmintic, antifungal, antimicrobial, diaphoretic, expectorant,
- warts, condylomata, syphilitic chancre (tincture); leukorrhea, N. gonorrhea, trachoma; anal fissures, anal/rectal prolapse (use leaf); hydrocele
- warts, gangrene, ulcers, bedsores, hemorrhage from malignant growths (topical dressings)
Homeopathically this remedy is referred to as Thuja.
The information provided is intended to augment the treatment from a naturopathic doctor or other trained medical professional. Although most herbs are generally safe, it is recommended that you avoid self-prescribing especially when there is an underlying ongoing medical condition, if you are on any prescription medications or if you are pregnant or breastfeeding.
Formulations and Preparation
- Tincture - 1-20 drops three times daily
- Fluid extracts - 1-20 drops three times daily
- Infusion - 20-60 drops three times daily, 2-4g/cup
- Volatile oil - 1-3 drops
- Generally regarded as safe.
- Side-effects are not generally seen.
- Contraindicated in pregnancy as the herb may act as an abortifacient (increases uterine contractions).
- Drug-Herb Interactions are rare.
- Boon Heather, Smith Michael (2009) 55 Most Common Medicinal Herbs: The Complete Natural Medicine Guide Second Edition Institute of Naturopathic Education and Research, CCNM Toronto.
- Godfrey Anthony, Saunders Paul, Barlow Kerry, Gowan Matt (2011) Principles and Practices of Naturopathic Botanical Medicine, Advanced Botanical Medicine. V3 CCNM Press, Toronto.
- Stargrove Mitchell Bebell, Treasure Jonathan, McKee Dwight L (2008) Herb, Nutrient and Drug Interactions: Clinical Implications and Therapeutic Strategies.
- Brinker Francis (1997) Herbal Contraindications and Drug Interactions: Plus Herbal Adjuncts With Medicines, 4th Edition Eclectic Medical Publications.