Interaction Details

There were no interactions found between Progesterone and Marsh Labrador Tea. This does not mean the potential for an interaction does not exist, however. There is often a lack of studies and data surrounding traditional medicine, especially concerning drug interactions, so it is important to always consult your provider before making any changes to your medication regimen.


Still looking for more information about combining Progesterone and Marsh Labrador Tea? Ask Dr. Brian Staiger about it by contacting him directly.

Marsh Labrador Tea Overview

Marsh Labrador Tea Marsh Labrador tea (Rhododendron tomentosum) is a shrub that is native to North America and a member of the heath family (Ericaceae). The shrub has small, white or pink flowers that bloom in the spring, and small, green berries that turn black when ripe. It contains the word 'marsh' in its name as it is often seen growing in nutrient-poor, acidic soils of bogs and swamps. Marsh Labrador tea has been used most commonly in traditional medicine as a natural remedy for colds and respiratory problems. The leaves and twigs of the plant are used to make a tea that is believed to have astringent, expectorant, and diuretic properties. It has also been used for stimulating milk flow, as well as topically to relieve e swelling, ulcers, burns and stings. It is important to use caution when consuming Marsh Labrador tea as it contains very small amounts of a toxic substance known as andromedotoxin, which can cause vomiting, diarrhea, and difficulty breathing if ingested in large amounts.
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Progesterone Overview

  • Progesterone is used as a part of hormone replacement therapy in women who have passed menopause (the change of life) and have not had a hysterectomy (surgery to remove the uterus). Hormone replacement therapy usually includes estrogen, which is used to treat symptoms of menopause and reduce the risk of developing certain diseases. However, estrogen can also cause abnormal thickening of the lining of the uterus and increase the risk of developing uterine cancer. Progesterone helps to prevent this thickening and decreases the risk of developing uterine cancer. Progesterone is also used to bring on menstruation (period) in women of childbearing age who have had normal periods and then stopped menstruating. Progesterone is in a class of medications called progestins (female hormones). It works as part of hormone replacement therapy by decreasing the amount of estrogen in the uterus. It works to bring on menstruation by replacing the natural progesterone that some women are missing.

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Marsh Labrador Tea - More Interactions

Marsh Labrador Tea interacts with 247 drugs

Interaction Rating Key

These severity listings are for informational use only. Never start, stop or otherwise change your therapy before speaking with your provider.

Major The combined use of these agents is strongly discouraged as serious side effects or other negative outcomes could occur.
Moderate Use cautiously under the care of a healthcare professional or avoid this combination. A significant interaction or negative outcome could occur.
Minor Be aware that there is a chance of an interaction. Watch for warning signs of a potential interaction.
Unknown No interactions have been reported or no interaction data is currently available.

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Parts of this content are provided by the Therapeutic Research Center, LLC.

DISCLAIMER: Currently this does not check for drug-drug interactions. This is not an all-inclusive comprehensive list of potential interactions and is for informational purposes only. Not all interactions are known or well-reported in the scientific literature, and new interactions are continually being reported. Input is needed from a qualified healthcare provider including a pharmacist before starting any therapy. Application of clinical judgment is necessary.

© 2021 Therapeutic Research Center, LLC

Drug descriptions are provided by MedlinePlus.

Ask A Pharmacist About Your Herbal Questions!

Dr. Brian Staiger, PharmD

In addition to being a clinical pharmacist specializing in pharmacotherapy, Dr. Brian Staiger is a registered herbalist through the American Herbalist Guild. He has combined his passion for pharmacy practice with the study of medical ethnobotany to improve patient care. Feel free to reach out about any of your herbal or medication questions!

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