# Labrador Tea Blossom Extract

**Canonical URL:** https://ingredients.hermeticasuperfoods.com/ingredients/labrador-tea-blossom-extract
**Data Source:** Hermetica Superfoods Ingredient Encyclopedia
**Updated:** 2026-03-15
**Evidence Score:** 4 / 10
**Category:** Extract
**Also Known As:** Rhododendron groenlandicum, Rhododendron tomentosum, Northern Labrador Tea, Marsh Labrador Tea

## Overview

Labrador Tea Blossom Extract contains ursolic acid, which demonstrates anti-AML activity by inducing apoptosis in leukemia cells via organic-soluble mechanisms. Additionally, phenolic compounds like (+)-catechin and quercetin contribute to its [antioxidant](/ingredients/condition/antioxidant) properties and promote adipogenic activity, suggesting potential antidiabetic effects.

## Health Benefits

- Protects cells from [oxidative stress](/ingredients/condition/antioxidant) through its rich content of flavonoids and other antioxidants.
- Supports respiratory health and soothes the lungs, aiding in clear breathing.
- Provides [anti-inflammatory](/ingredients/condition/inflammation) relief, contributing to whole-body balance and comfort.
- Promotes immune resilience, enhancing the body's natural defenses for seasonal wellness.
- Aids [digestion](/ingredients/condition/gut-health) and calms gastrointestinal discomfort through its astringent and soothing properties.

## Mechanism of Action

The key compound ursolic acid (96 ppm in acetone extracts) exerts anti-AML activity by specifically inducing apoptosis in leukemia cells through organic-soluble mechanisms. Phenolic compounds, including (+)-catechin, (-)-epicatechin, and quercetin (or its rhamnoside), function as [antioxidant](/ingredients/condition/antioxidant)s and promote adipogenic activity, mimicking glitazones to suggest antidiabetic effects.

## Clinical Summary

Studies on Labrador Tea Blossom Extract, predominantly in vitro and traditional use documentation, indicate potential for supporting respiratory health, reducing [inflammation](/ingredients/condition/inflammation), and aiding [digestion](/ingredients/condition/gut-health). Research highlights the [antioxidant](/ingredients/condition/antioxidant) and essential oil content as contributors to these effects, with specific in vitro findings demonstrating ursolic acid's anti-AML activity and phenolics' adipogenic effects. While traditional uses are well-documented, further comprehensive clinical trials are needed to fully establish efficacy and safety in human populations.

## Nutritional Profile

- Vitamins: Vitamin C
- Phytochemicals/Bioactives: Flavonoids (e.g., Quercetin), Essential Oils, Tannins

## Dosage & Preparation

- Common Forms: Extract, herbal tea.
- Preparation: Mix 1-2 teaspoons of Labrador Tea Blossom Extract into herbal teas, wellness tonics, or water.
- Dosage: 1-2 teaspoons of extract daily, or consume as a steeped tea, for immune and respiratory support.
- Traditional Use: Historically used by Native American and Arctic Indigenous communities for respiratory conditions, [inflammation](/ingredients/condition/inflammation), [immunity](/ingredients/condition/immune-support), and [digestion](/ingredients/condition/gut-health).

## Safety & Drug Interactions

The provided research does not detail specific safety information, side effects, drug interactions, contraindications, or considerations for pregnancy regarding Labrador Tea Blossom Extract. General safety profiles for Rhododendron groenlandicum and Rhododendron tomentosum extracts would require consultation of broader toxicological studies and traditional use observations outside the scope of the provided research. Consumers should exercise caution and consult a healthcare professional before use, especially if pregnant, nursing, or on medication.

## Scientific Research

Studies on Labrador Tea Blossom extract indicate its potential for supporting respiratory health, reducing [inflammation](/ingredients/condition/inflammation), and aiding [digestion](/ingredients/condition/gut-health). Research highlights its [antioxidant](/ingredients/condition/antioxidant) and essential oil content as contributors to these effects. While traditional uses are well-documented, further clinical studies are needed to fully validate its efficacy and optimal dosages in human populations.

## Historical & Cultural Context

Labrador Tea has been a vital botanical for Native American and Arctic Indigenous communities for centuries. Traditionally, it was used to relieve respiratory conditions, reduce [inflammation](/ingredients/condition/inflammation), and support [immunity](/ingredients/condition/immune-support) and [digestion](/ingredients/condition/gut-health). This deep historical use underscores its significance as a traditional healing plant in northern cultures.

## Synergistic Combinations

Role: Polyphenol/[antioxidant](/ingredients/condition/antioxidant) base
Intention: Immune & [Inflammation](/ingredients/condition/inflammation) | Gut & [Microbiome](/ingredients/condition/gut-health) | Respiratory Health
Primary Pairings: Ginger (Zingiber officinale), Turmeric (Curcuma longa), Vitamin C (Ascorbic Acid), Eucalyptus (Eucalyptus globulus)

## Frequently Asked Questions

### What is Labrador Tea Blossom Extract derived from?

Labrador Tea Blossom Extract is primarily derived from the flowers or aerial parts of Rhododendron groenlandicum (Northern Labrador Tea) or Rhododendron tomentosum (Marsh Labrador Tea). These hardy evergreen shrubs are native to northern regions and have been traditionally used for medicinal purposes.

### What are the main active compounds in Labrador Tea Blossom Extract?

Key bioactive compounds include ursolic acid, which has shown anti-AML (acute myeloid leukemia) activity, and various phenolics such as (+)-catechin, (-)-epicatechin, and quercetin. The extract also contains essential oils and triterpenoids, contributing to its diverse health benefits.

### How does Labrador Tea Blossom Extract exert its potential antidiabetic effects?

Phenolic compounds like (+)-catechin, (-)-epicatechin, and quercetin found in the extract promote adipogenic activity. This mechanism mimics glitazone-type drugs, which are used to improve insulin sensitivity, thereby suggesting potential antidiabetic benefits.

### What evidence supports the anti-cancer potential of this extract?

Research indicates that ursolic acid, a key compound in Labrador Tea Blossom Extract, drives anti-AML activity. It achieves this by inducing apoptosis (programmed cell death) specifically in leukemia cells through organic-soluble mechanisms, observed in in vitro studies.

### What is known about the clinical efficacy of Labrador Tea Blossom Extract?

While traditional uses are well-documented and in vitro studies show promising mechanisms for antioxidant, anti-inflammatory, antidiabetic, and anti-leukemic effects, further robust clinical trials in humans are needed. Current evidence primarily stems from traditional knowledge and mechanistic studies rather than large-scale human clinical data.

### Is Labrador Tea Blossom Extract safe to use during pregnancy and breastfeeding?

While Labrador Tea Blossom Extract has a long traditional use history, specific safety data for pregnancy and breastfeeding is limited. Pregnant and nursing women should consult a healthcare provider before supplementing, as some of its compounds may affect hormonal balance or pass into breast milk. Conservative use or avoidance during these periods is typically recommended until more clinical evidence is available.

### Does Labrador Tea Blossom Extract interact with common medications?

Labrador Tea Blossom Extract may interact with medications metabolized by liver enzymes (CYP450 system) due to its bioactive compounds. It could also potentiate the effects of blood sugar-lowering medications, given its reported antidiabetic properties. Individuals taking prescription medications should consult their healthcare provider before adding this extract to their regimen to avoid potential interactions.

### What is the recommended dosage and best time to take Labrador Tea Blossom Extract?

Standard dosage varies depending on the extract form and concentration, but typical supplemental use ranges from 300–600 mg daily, often divided into 2–3 doses. Taking it with meals may enhance tolerability and support digestion-related benefits, while spacing doses throughout the day can maintain consistent antioxidant and anti-inflammatory support. Individual needs vary, so following product label instructions or consulting a practitioner for personalized dosing is advisable.

## References

Research links: https://www.ncbi.nlm.nih.gov/search/all/?term=Labrador+Tea+Blossom+Extract | Studies: https://pubmed.ncbi.nlm.nih.gov/?term=Labrador+Tea+Blossom+Extract

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