Marsh labrador tea
Marsh labrador tea


Marsh Labrador tea is a plant. People use it to make medicine.

People use marsh Labrador tea for muscle and joint pain (rheumatism), bronchitis, cold, cough, and other conditions, but there is no good scientific evidence to support these uses. Using marsh Labrador tea can also be unsafe.
When taken by mouth: Marsh Labrador tea is UNSAFE when taken in large amounts. It can cause severe irritation of the stomach and intestines, kidney damage, paralysis, and other serious side effects, including death.

Special Precautions & Warnings:

Pregnancy and breast-feeding: It's UNSAFE to use marsh Labrador tea if you are pregnant. It can stimulate the uterus and cause an abortion. There isn't enough reliable information to know if marsh Labrador tea is safe to use when breast-feeding. Stay on the safe side and avoid use.

Stomach or intestinal problems such as gastritis or inflammatory bowel disease: Marsh Labrador tea might make these conditions worse. Avoid use.

Kidney problems: Don't use marsh Labrador tea if you have kidney problems. It could make your condition worse.

Urinary tract problems such as kidney or bladder infections: Marsh Labrador tea might make these conditions worse. Avoid use.

Surgery: Marsh Labrador tea can slow down the central nervous system and cause sleepiness and other effects. There is some concern that marsh Labrador tea might slow down the central nervous system too much if it is combined with anesthesia and other medications during and after surgery. Stop using marsh Labrador tea at least 2 weeks before a scheduled surgery.


NatMed Pro rates effectiveness based on scientific evidence according to the following scale: Effective, Likely Effective, Possibly Effective, Possibly Ineffective, Likely Ineffective, Ineffective, and Insufficient Evidence to Rate.
Likely effective Effectiveness definitions
Possibly effective Effectiveness definitions
Likely ineffective Effectiveness definitions
Possibly ineffective Effectiveness definitions
Insufficient evidence Effectiveness definitions
  • Swelling after surgery.
  • Pain and swelling of the muscles and joints (rheumatism).
  • Whooping cough.
  • Bronchitis.
  • Colds.
  • Cough.
  • Fluid retention.
  • Stimulating milk flow.
  • Increasing sweating.
  • Causing an abortion.
  • Other conditions.
More evidence is needed to rate the effectiveness of marsh Labrador tea for these uses.

Dosing & administration

The appropriate dose of marsh Labrador tea depends on several factors such as the user's age, health, and several other conditions. At this time there is not enough scientific information to determine an appropriate range of doses for marsh Labrador tea. Keep in mind that natural products are not always necessarily safe and dosages can be important. Be sure to follow relevant directions on product labels and consult your pharmacist or physician or other healthcare professional before using.

Interactions with pharmaceuticals

Sedative medications (CNS depressants)

Interaction Rating=Moderate Be cautious with this combination.

Marsh Labrador tea might cause sleepiness and drowsiness. Medications that cause sleepiness are called sedatives. Taking marsh Labrador tea along with sedative medications might cause too much sleepiness.

Some sedative medications include clonazepam (Klonopin), lorazepam (Ativan), phenobarbital (Donnatal), zolpidem (Ambien), and others.

Interactions with herbs & supplements

There are no known interactions with herbs and supplements.

Interactions with foods

There are no known interactions with foods.


There isn't enough reliable information to know how marsh Labrador tea might work.
Practitioner product
Practitioner product has licensed monographs from TRC Healthcare.
This monograph was last reviewed on 27/01/2023 20:16:53 and last updated on 30/05/2014 17:38:13. Monographs are reviewed and/or updated multiple times per month and at least once per year.
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