Marsh Labrador Tea

OTHER NAME(S): James' Tea, Lède des Marais, Ledi Palustris Herba, Ledum Silvestre, Marsh Cistus, Moth Herb, Northern Labrador Tea, Petit Thé du Labrador, Romarin Sauvage, Romero Silvestre, Sumpfporst, Swamp Tea, Te de Los Pantanos, Wild Rosemary, Rhododendron tomentosum var. tomentosum, Ledum palustre, Rhododendron palustre, Té de Romero Silvestre, Lédon des Marais

Overview

Marsh Labrador tea is made from the leaves of a small, evergreen shrub called Rhododendron tomentosum. It's traditionally used as medicine.

Marsh Labrador tea contains high amounts of essential oils, which include various chemicals. Some of these chemicals can affect the nervous system and cause an abortion.

People sometimes use marsh Labrador tea for back pain, insect bites, osteoarthritis, and many other conditions, but there is no good scientific evidence to support these uses. Using marsh Labrador tea can also be unsafe.

Don't confuse marsh Labrador tea with bog Labrador tea. These are not the same.

References
  1. Blumenthal M, ed. The Complete German Commission E Monographs: Therapeutic Guide to Herbal Medicines. Trans. S. Klein. Boston, MA: American Botanical Council, 1998.
  2. Brinker F. Herb Contraindications and Drug Interactions. 2nd ed. Sandy, OR: Eclectic Medical Publications, 1998.
  3. Stam, C., Bonnet, M. S., and van Haselen, R. A. The efficacy and safety of a homeopathic gel in the treatment of acute low back pain: a multi-centre, randomised, double-blind comparative clinical trial. Br Homeopath J 2001;90(1):21-28.
  4. Hill, N., Stam, C., Tuinder, S., and van Haselen, R. A. A placebo controlled clinical trial investigating the efficacy of a homeopathic after-bite gel in reducing mosquito bite induced erythema. Eur J Clin Pharmacol 1995;49(1-2):103-108.
  5. van Haselen, R. A. and Fisher, P. A. A randomized controlled trial comparing topical piroxicam gel with a homeopathic gel in osteoarthritis of the knee. Rheumatology (Oxford) 2000;39(7):714-719.
  6. Kang JY, Tran KD, Seiff SR, Mack WP, Lee WW. Assessing the effectiveness of Arnica montana and Rhododendron tomentosum (Ledum palustre) in the reduction of ecchymosis and edema after oculofacial surgery: Preliminary results. Ophthal Plast Reconstr Surg. 2017;33(1):47-52.
  7. Dampc A, Luczkiewicz M. Bog Labrador tea--the aromatic beverage and spice: a review of origin, processing and safety. J Sci Food Agric. 2015;95(8):1577-83.