Plant Comparison
Birch vs Labrador-tea
A side-by-side comparison of two medicinal plants — every documented constituent, action, use, safety note and cited source, assembled automatically from the Omnia Sana database.
At a glance
Birch and Labrador-tea: they share 6 indicated uses (arthritis / joint pain, inflammation (general), skin irritation, …); 3 pharmacological actions in common.
Evidence face-off — shared uses
| Condition | Birch | Labrador-tea | Verdict |
|---|---|---|---|
| Arthritis / joint pain | 1/10 | 2/10 | Comparable evidence |
| Inflammation (general) | 1/10 | 1/10 | Comparable evidence |
| Skin irritation | 1/10 | 1/10 | Comparable evidence |
| Swelling / fluid retention | 1/10 | 3/10 | Stronger for Labrador-tea |
| Urinary support | 1/10 | 1/10 | Comparable evidence |
| Urinary tract infection (UTI) | 1/10 | 1/10 | Comparable evidence |
Evidence scores (1–10) are computed from the tier of each cited source. “Comparable” means the two scores are within one point. Follow a score to its detailed sources.
Key Constituents
Principal diuretic and antioxidant constituents of the leaf.
Characteristic bark triterpenes, betulin giving birch bark its white colour; studied for anticancer and anti-inflammatory activity.
Contribute to the astringent and antioxidant properties of the bark and leaf.
Ledol is the characteristic, mildly toxic sesquiterpene alcohol of the leaf, particularly concentrated in fresh material.
Toxic diterpenes shared with related Ericaceae; the basis for the caution around excessive or prolonged use.
Pharmacological Actions
Traditional & Indicated Uses
inferred from gastroprotective action
inferred from anti-inflammatory action
inferred from anti-rheumatic action
inferred from antidiabetic action
inferred from anticancer action
inferred from gastroprotective action
inferred from antimicrobial action
inferred from anti-inflammatory action
inferred from antidiabetic action
inferred from anti-inflammatory action
inferred from diuretic action
inferred from diuretic action
inferred from diuretic action
inferred from anti-inflammatory action
inferred from anti-inflammatory action
inferred from anti-inflammatory action
inferred from diuretic action
inferred from diuretic action
Safety, Cautions & Contraindications
Generally considered safe when used appropriately. Side effects may include diarrhea, nausea, and allergic reactions (itching, rash, stuffy nose). Not recommended for individuals with edema caused by heart or kidney dysfunction. Ensure adequate fluid intake when using as a diuretic. Frequency of side effects is unknown.
Duke (2002) provides clinical evidence (score 2) for birch leaf's diuretic activity, as well as for its use in urinary gravel, kidney stones, and rheumatic conditions — consistent with Commission E (KOM) and German Phytotherapy (PIP) approvals. It acts as an aquaretic, increasing urine volume without electrolyte loss. Antimelanomic activity has been demonstrated in experimental studies. The plant has a good safety profile and is classified as non-toxic at usual therapeutic doses (Duke, 2002).
Labrador tea contains ledol, a toxic sesquiterpene alcohol, particularly concentrated in fresh leaves. Excessive consumption can cause dizziness, headache, nausea, and even toxicity (especially in the related Ledum palustre). Use only in small, controlled amounts. Not recommended during pregnancy or breastfeeding. Identify plant correctly — confusion with other bog plants can be dangerous.
Duke (2002) rates Labrador tea as + (caution warranted) and notes primarily folkloric activities, with the plant acting as a diuretic, expectorant, and vulnerary. Importantly, Duke classifies it as having narcotic and deliriant potential — large doses can cause intoxication, hallucinations, and toxicity. It contains ericolin and ledol, which are potentially neurotoxic compounds. Duke emphasizes that Labrador tea should be used only with caution and at low doses, and notes that it is not appropriate for regular internal use given its toxicity profile at higher amounts (Duke, 2002).
External Ids
Botanical Description
Elegant deciduous tree with a slender trunk, distinctive smooth white bark that peels in papery horizontal strips and becomes dark and fissured near the base with age, and characteristically drooping ('pendulous') branchlets. The leaves are small, triangular to diamond-shaped, doubly toothed and long-pointed. Male and female flowers are borne in separate catkins on the same tree in spring.[1]
Low evergreen shrub (Ericaceae), 30-100 cm tall. Leaves are narrow, leathery, with in-rolled margins and a dense, rust-coloured, woolly felt on the underside, strongly aromatic when crushed. Small white flowers are borne in terminal clusters.[4]
Habitat
A pioneer tree of light, well-drained, often poor or acidic soils, growing in woodland, heathland and waste ground across Europe and much of temperate Asia.[1]
Harvesting
Leaves are picked in spring and early summer while young and tender; bark is collected from felled or fallen wood (living trees should not be stripped of bark, which can kill them); sap is tapped in early spring, before leaf-out, through a small hole bored in the trunk.[1]
Leaves and young stems are gathered, traditionally in late summer, and dried. Only small amounts are used given the plant's ledol/grayanotoxin content, and correct identification against toxic bog look-alikes (bog rosemary) is essential.[6]
Traditional Uses
Birch leaf is a classic European 'aquaretic' diuretic used for urinary gravel, kidney stones and as a spring detoxifying tonic, and for rheumatic and joint complaints; the bark and its extracts have a long folk history for skin conditions, while the sap has been drunk fresh as a traditional spring tonic.[1]
Labrador tea has a long Indigenous North American and Scandinavian folk-medicine tradition as a mild diuretic and respiratory remedy, and as an aromatic tea and spice, always used in small, cautious amounts given its narcotic/toxic potential at higher doses. Modern phytochemical work confirms anti-inflammatory and antioxidant activity of its essential oil.[1]
Preparations
Dosage
The EU herbal monograph gives 2-3 g of the comminuted leaf in 150 mL of boiling water as an infusion, up to 4 times daily, in adolescents, adults and elderly, with adequate fluid intake; dry extract at 0.25-1 g 4 times daily and liquid extract at 15 mL 2-3 times daily are also listed. Traditionally used over a period of 2-4 weeks. Not recommended under 12 years. Educational reference only, not a prescription.
Duke (2002) advises using Labrador tea only with caution and at low doses given its narcotic/deliriant potential at higher amounts; it is not appropriate for regular internal use. Educational reference only, not a prescription - use only small, occasional amounts of properly identified leaf.
References
Lookalikes Review
Dangerous Lookalikes
Not documented
References & Sources
- Rastogi, S., Pandey, M.M. and Kumar Singh Rawat, A (2014) 'Medicinal plants of the genus Betula — traditional uses and a phytochemical-pharmacological review', Journal of Ethnopharmacology, 159, pp. 62-83. doi:10.1016/j.jep.2014.11.010 Traditional / reference
https://doi.org/10.1016/j.jep.2014.11.010 - Penkov, D., Andonova, V., Delev, D. and Kostadinov, I (2018) 'Antioxidant Activity of Dry Birch (Betula pendula) Leaves Extract', Folia Medica, 60(4), pp. 571-579. doi:10.2478/folmed-2018-0035 Preclinical
https://doi.org/10.2478/folmed-2018-0035 - Sevastre-Berghian, A.C., Ielciu, I., Bab, T., Olah, N.K. et al (2023) 'Betula pendula Leaf Extract Targets the Interplay between Brain Oxidative Stress, Inflammation, and NF-kB Pathways in Amyloid Abeta-Treated Rats', Antioxidants (Basel), 12(12), pp. 2110. doi:10.3390/antiox12122110 Preclinical
https://doi.org/10.3390/antiox12122110 - Grundemann, C., Gruber, C.W., Hertrampf, A., Zehl, M., Kopp, B. and Huber, R (2011) 'An aqueous birch leaf extract of Betula pendula inhibits the growth and cell division of inflammatory lymphocytes', Journal of Ethnopharmacology, 136(3), pp. 444-451. doi:10.1016/j.jep.2011.05.018 Preclinical
https://doi.org/10.1016/j.jep.2011.05.018 - Azman, N.A.M., Skowyra, M., Muhammad, K., Gallego, M.G. and Almajano, M.P (2017) 'Evaluation of the antioxidant activity of Betula pendula leaves extract and its effects on model foods', Pharmaceutical Biology, 55(1), pp. 912-919. doi:10.1080/13880209.2017.1282528 Preclinical
https://doi.org/10.1080/13880209.2017.1282528 - Bljajic, K., Sostaric, N., Petlevski, R., Vujic, L., Brajkovic, A. and Fumic, B (2016) 'Effect of Betula pendula Leaf Extract on alpha-Glucosidase and Glutathione Level in Glucose-Induced Oxidative Stress', Evidence-Based Complementary and Alternative Medicine, 2016, pp. 8429398. doi:10.1155/2016/8429398 Preclinical
https://doi.org/10.1155/2016/8429398 - Ou-Yang, T., Zhang, Y., Luo, H.Z., Liu, Y. and Ma, S.C (2023) 'Novel compounds discovery approach based on UPLC-QTOF-MS/MS chemical profile reveals birch bark extract anti-inflammatory, -oxidative, and -proliferative effects', Journal of Ethnopharmacology, 309, pp. 116148. doi:10.1016/j.jep.2023.116148 Preclinical
https://doi.org/10.1016/j.jep.2023.116148 - Szoka, L., Nazaruk, J., Stocki, M. and Isidorov, V (2021) 'Santin and cirsimaritin from Betula pubescens and Betula pendula buds induce apoptosis in human digestive system cancer cells', Journal of Cellular and Molecular Medicine, 25(23), pp. 11085-11096. doi:10.1111/jcmm.17031 Preclinical
https://doi.org/10.1111/jcmm.17031 - Isidorov, V., Szoka, L. and Nazaruk, J (2018) 'Cytotoxicity of white birch bud extracts: Perspectives for therapy of tumours', PLoS One, 13(8), pp. e0201949. doi:10.1371/journal.pone.0201949 Preclinical
https://doi.org/10.1371/journal.pone.0201949 - Efthimiou, I., Vlastos, D., Triantafyllidis, V., Eleftherianos, A. and Antonopoulou, M (2022) 'Investigation of the Genotoxicological Profile of Aqueous Betula pendula Extracts', Plants, 11(20), pp. 2673. doi:10.3390/plants11202673 Preclinical
https://doi.org/10.3390/plants11202673 - Jafari Hajati, R., Payamnoor, V., Ahmadian Chashmi, N. and Ghasemi Bezdi, K (2018) 'Improved accumulation of betulin and betulinic acid in cell suspension culture of Betula pendula Roth by abiotic and biotic elicitors', Preparative Biochemistry & Biotechnology, 48(10), pp. 915-924. doi:10.1080/10826068.2018.1514514 Preclinical
https://doi.org/10.1080/10826068.2018.1514514 - European Medicines Agency (HMPC) (2015) 'European Union herbal monograph on Betula pendula Roth and/or Betula pubescens Ehrh. as well as hybrids of both species, folium'. Available at: https://www.ema.europa.eu/en/documents/herbal-monograph/final-european-union-herbal-monograph-betula-pendula-roth-betula-pubescens-ehrh-folium_en.pdf Traditional / reference
https://www.ema.europa.eu/en/documents/herbal-monograph/final-european-union-herbal-monograph-betula-pendula-roth-betula-pubescens-ehrh-folium_en.pdf - European Medicines Agency (HMPC) (2015) 'Birch leaf (Betulae folium): summary for the public'. Available at: https://www.ema.europa.eu/en/documents/herbal-summary/birch-leaf-summary-public_en.pdf Traditional / reference
https://www.ema.europa.eu/en/documents/herbal-summary/birch-leaf-summary-public_en.pdf - Oszmiański J, et al. Evaluating birch leaf tea as a functional herbal beverage. Food Res Int. 2024. https://www.sciencedirect.com/science/article/abs/pii/S0963996924005519 https://pmc.ncbi.nlm.nih.gov/articles/PMC7126499/ (2024) 'https://www.sciencedirect.com/science/article/abs/pii/S0963996924005519 https://pmc.ncbi.nlm.nih.gov/articles/PMC7126499/'. Available at: https://www.sciencedirect.com/science/article/abs/pii/S0963996924005519 Traditional / reference
https://www.sciencedirect.com/science/article/abs/pii/S0963996924005519 - Rastogi S, Pandey MM, Rawat AKS. Medicinal plants of the genus Betula—Traditional uses and a phytochemical–pharmacological review. J Ethnopharmacol. 2015;159:62-83. https://pmc.ncbi.nlm.nih.gov/articles/PMC7126499/ (2015) ';159:62-83'. Available at: https://pmc.ncbi.nlm.nih.gov/articles/PMC7126499/ Traditional / reference
https://pmc.ncbi.nlm.nih.gov/articles/PMC7126499/ - Duke, J.A (2002) 'Handbook of Medicinal Herbs, Second Edition'. Traditional / reference
https://scholar.google.com/scholar?q=Handbook%20of%20Medicinal%20Herbs%2C%20Second%20Edition
- Dampc, A. and Luczkiewicz, M (2013) 'Rhododendron tomentosum (Ledum palustre): a review of traditional use based on current research', pp. 130--143. Traditional / reference
https://scholar.google.com/scholar?q=Rhododendron%20tomentosum%20%28Ledum%20palustre%29%3A%20a%20review%20of%20traditional%20use%20based%20on%20current%20research - Jesionek, A., Kokotkiewicz, A., Mikosik-Roczynska, A., Ciesielska-Figlon, K. and others (2019) 'Chemical variability of Rhododendron tomentosum (Ledum palustre) essential oils and their pro-apoptotic effect on lymphocytes and rheumatoid arthritis synoviocytes', Fitoterapia, 139, pp. 104402. doi:10.1016/j.fitote.2019.104402 Preclinical
https://doi.org/10.1016/j.fitote.2019.104402 - Kang, J.Y., Tran, K.D., Seiff, S.R., Mack, W.P. and Lee, W.W (2017) 'Assessing the Effectiveness of Arnica montana and Rhododendron tomentosum (Ledum palustre) in the Reduction of Ecchymosis and Edema After Oculofacial Surgery: Preliminary Results', Ophthalmic Plastic and Reconstructive Surgery, 33(1), pp. 47-52. doi:10.1097/IOP.0000000000000645 Clinical study
https://doi.org/10.1097/IOP.0000000000000645 - Vengryte, M. and Raudone, L (2024) 'Phytochemical Profiling and Biological Activities of Rhododendron subsect. Ledum: Discovering the Medicinal Potential of Labrador Tea Species in the Northern Hemisphere', Plants (Basel), 13(6), pp. 901. doi:10.3390/plants13060901 Traditional / reference
https://doi.org/10.3390/plants13060901 - Iunusova, D.R., Polezhaeva, M.A. and Marchuk, E.A (2024) 'Confusing boundaries of the Labrador tea species: dispersal history explains the lack of clear species structure', Annals of Botany, 134(6), pp. 959-974. doi:10.1093/aob/mcae130 Preclinical
https://doi.org/10.1093/aob/mcae130 - Dampc, A. and Luczkiewicz, M (2014) 'Labrador tea - the aromatic beverage and spice: a review of origin, processing and safety', Journal of the Science of Food and Agriculture, 95(8), pp. 1577-1583. doi:10.1002/jsfa.6889 Traditional / reference
https://doi.org/10.1002/jsfa.6889 - Jaenson, T.G.T., Palsson, K. and Borg-Karlson, A.K (2005) 'Evaluation of extracts and oils of tick-repellent plants from Sweden', Medical and Veterinary Entomology, 19(4), pp. 345-352. doi:10.1111/j.1365-2915.2005.00578.x Preclinical
https://doi.org/10.1111/j.1365-2915.2005.00578.x - Tattje, D.H.E. and Bos, R (1981) 'Composition of essential oil of Ledum palustre', Planta Medica, 41(3), pp. 303-307. doi:10.1055/s-2007-971719 Preclinical
https://doi.org/10.1055/s-2007-971719 - Zhang, K., Wang, J., Chen, L., Li, J. and others (2019) 'Two new taraxerane-type triterpenes from Ledum palustre L', Natural Product Research, 34(19), pp. 2723-2728. doi:10.1080/14786419.2019.1586689 Preclinical
https://doi.org/10.1080/14786419.2019.1586689 - Islam, M.N., Khalil, M.I., Islam, M.A. and Gan, S.H (2013) 'Toxic compounds in honey', Journal of Applied Toxicology, 34(7), pp. 733-742. doi:10.1002/jat.2952 Traditional / reference
https://doi.org/10.1002/jat.2952 - Baananou, S., Bagdonaite, E., Marongiu, B., Piras, A. and others (2014) 'Supercritical CO2 extract and essential oil of aerial part of Ledum palustre L. - Chemical composition and anti-inflammatory activity', Natural Product Research, 29(11), pp. 999-1005. doi:10.1080/14786419.2014.965167 Preclinical
https://doi.org/10.1080/14786419.2014.965167 - Grieve, M (1931) 'A Modern Herbal'. Traditional / reference
https://scholar.google.com/scholar?q=A%20Modern%20Herbal - Royal Botanic Gardens, Kew (n.d.). Available at: https://powo.science.kew.org Traditional / reference
https://powo.science.kew.org - Duke, J.A (2002) 'Handbook of Medicinal Herbs, Second Edition'. Traditional / reference
https://scholar.google.com/scholar?q=Handbook%20of%20Medicinal%20Herbs%2C%20Second%20Edition - Kirtley, Paul (2015) 'Labrador Tea - Tonic or Toxic?'. Available at: https://paulkirtley.co.uk/2015/labrador-tea-tonic-or-toxic/ Traditional / reference
https://paulkirtley.co.uk/2015/labrador-tea-tonic-or-toxic/ - Jiang, L. and Zhanxiong, L. and Fengcai, Y. and Fuli, L. and Xiaoling, S (2022) 'Third-degree atrioventricular block caused by intoxication with rhododendron leaves', Annals of Noninvasive Electrocardiology, 28(2), pp. e13012. doi:10.1111/anec.13012 Clinical study
https://doi.org/10.1111/anec.13012
Generated automatically from the Omnia Sana plant database and its cited sources. For educational purposes only — not medical advice. Always consult a qualified practitioner before using medicinal plants.