Dendrobium

Dendrobium is a large genus of orchids (200+ species) with extensive use in Traditional Chinese Medicine. D. nobile and D. officinale are most common medicinally. Contains alkaloids (dendrobine), polysaccharides, bibenzyls, and phenanthrenes. Traditional uses include treating dry mouth, stomach disorders, and promoting longevity. Animal and in vitro studies show antioxidant, anti-inflammatory, immunomodulatory, and gastroprotective effects. Very limited human clinical data - one small trial for airway function in smokers. Popular in pre-workout supplements but no evidence supports performance benefits. Safety concern: dendrobine may cause seizures, low blood pressure, and slow heart rate at high doses.

Quick Answer

What it is

Dendrobium is a large genus of orchids (200+ species) with extensive use in Traditional Chinese Medicine. D.

Key findings

Grade C: Gastroprotection
Grade D: Antioxidant Status
Grade D: Inflammation

Safety

No specific caution or interaction language was detected in the current summary/outcome notes.

ℹ️ Quick Facts: Dendrobium

Quick Facts: Dendrobium

Best Evidence:Grade D
Conditions Studied:2
Research Outcomes:6
Key Effect:Antioxidant Status

Outcomes by grade:

2 conditions · 6 outcomes

Detailed Outcomes

Gastroprotection

Animal studies show gastroprotective effects through enhanced mucus secretion and epithelial protection, consistent with extensive traditional use in TCM for stomach disorders. Recognized in the Chinese Pharmacopoeia for digestive support. No controlled human trials for gastrointestinal outcomes.

small↑Improves

Inflammation

In vitro and animal studies demonstrate reduced inflammatory markers and nitric oxide production in cell models. Polysaccharides and bibenzyl compounds appear to be the active anti-inflammatory constituents. No human anti-inflammatory trials exist.

small↓Improves

Blood Glucose

In animal models, Dendrobium extracts affect hepatic glycogen synthesis and gluconeogenesis via cAMP-PKA and Akt/FoxO1 pathways, suggesting potential glucose-lowering effects. No human diabetes or glucose metabolism trials have been conducted.

small↓Improves

Airway Function in Smokers

A single small RCT (n=40) in smokers with mild airflow obstruction used 1.2g Dendrobium polysaccharides three times daily. This appears to be one of the only controlled human trials of Dendrobium, with limited available details on effect size.

40 participants

small↑Improves

Antioxidant Status

In vitro studies show strong antioxidant activity in DPPH and ORAC assays, with some bibenzyl compounds exceeding vitamin C potency. No human trials have assessed antioxidant outcomes.

moderate↑Improves

Immune Function

Dendrobium polysaccharides show immunomodulatory effects in animal models, enhancing aspects of both innate and adaptive immunity. No human immunological trials exist.

small↑Improves

Evidence by Condition

Best grade per condition (each condition may have multiple outcomes)

DAntioxidant Status

1 outcome · 5 studies

↑Antioxidant StatusImproves

DAutoimmune Health

1 outcome · 3 studies

↑Immune FunctionImproves

Research Citations (5)

Dendrobium as a new natural source of bioactive for prevention and treatment of digestive tract diseases

Phytomedicine (2023)

PMID: 37011417

Bioactivities and mechanism of actions of Dendrobium officinale: a comprehensive review

Front Pharmacol (2022)

PMID: 36160715

Network pharmacologic analysis of Dendrobium officinale extract inhibiting the proliferation of gastric cancer cells

Evid Based Complement Alternat Med (2022)

PMID: 35401206

Bioactive phenanthrene and bibenzyl derivatives from the stems of Dendrobium nobile

J Nat Prod (2016)

PMID: 27310249

Bioactive bibenzyl derivatives and fluorenones from Dendrobium nobile

J Nat Prod (2007)

PMID: 17253844

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