Hermetica Superfood Encyclopedia
The Short Answer
Orientin is a C-glycosyl flavone found naturally in passion flower, bamboo leaves, and vitex, recognized for its modulation of MAPK signaling pathways and pro-inflammatory cytokine suppression. Preclinical research highlights its roles in nociception, neuroprotection, and pulmonary inflammation, though human clinical trials remain limited.
CategoryNamed Bioactive Compounds
GroupCompound
Evidence LevelModerate
Primary Keywordorientin benefits
Synergy Pairings3
Orientin — botanical close-up
Health Benefits
Origin & History
Natural habitat
Orientin is a C-glycosyl flavonoid (luteolin-8-C-glucoside) belonging to the flavone C-glycosides class. It occurs naturally in various medicinal plants, particularly Trollius chinensis Bunge, and is extracted through techniques used in pharmacokinetic studies of plant sources.
“While orientin itself lacks specific traditional documentation, it is a key compound in Trollius chinensis Bunge, used in traditional Chinese medicine. Its presence in various medicinal plants suggests historical context in plant-based remedies.”Traditional Medicine
Scientific Research
No human clinical trials, RCTs, or meta-analyses have been conducted on orientin. All available evidence comes from preclinical animal and cell culture studies, including research on neonatal pain (PMC10691896), sepsis (PMID: 41548767), acute lung injury (PMID: 33214095), vascular inflammation (PMID: 24950780), and cancer (PMID: 40045186).
Preparation & Dosage
Traditional preparation
No clinically studied human dosages exist. Animal studies used 14-21 mg/kg intraperitoneally in mice for pain relief over 6 days. Human dosing cannot be extrapolated from animal data. Consult a healthcare provider before starting any new supplement.
Nutritional Profile
Orientin is a C-glycosylated flavone (luteolin-8-C-glucoside) with molecular weight of 448.38 g/mol, not a macronutrient source. It is a bioactive polyphenolic compound found in passion flower (Passiflora sp.), buckwheat, millet, and tulsi leaves at concentrations typically ranging 0.1–2.5 mg/g dry weight depending on plant source. As a pure compound, it contains no protein, fat, or fiber. Bioavailability is notably limited due to its C-glycoside structure — unlike O-glycosides, the C-C bond resists hydrolysis by intestinal enzymes, resulting in partial colonic microbial metabolism into luteolin and other aglycone derivatives. Oral bioavailability is estimated at 5–15% in animal models, with peak plasma concentrations reached at approximately 2–4 hours post-ingestion. Lipid co-administration and nanoparticle encapsulation have been shown to enhance absorption by 2–3 fold in preclinical studies. No clinically established micronutrient content applies to isolated orientin supplementation.
How It Works
Mechanism of Action
Orientin modulates the mitogen-activated protein kinase (MAPK) signaling cascade, including ERK1/2, JNK, and p38 pathways, which regulate neuronal pain processing and memory consolidation. It suppresses pro-inflammatory cytokines such as TNF-α, IL-1β, and IL-6, partly through inhibition of phosphofructokinase (PFK) activity and NF-κB transcriptional activation. Additionally, orientin exhibits antioxidant activity by scavenging reactive oxygen species (ROS) and upregulating Nrf2-mediated cytoprotective gene expression.
Clinical Evidence
Current evidence for orientin is derived almost entirely from in vitro cell studies and rodent models, with no robust human randomized controlled trials published to date. Mouse studies using oral or intraperitoneal doses of 14–21 mg/kg demonstrated statistically significant increases in pain thresholds and improvements in maze-based memory tasks, attributed to MAPK pathway modulation. Separate animal models of acute lung injury showed reduced neutrophil infiltration and lower bronchoalveolar lavage concentrations of TNF-α and IL-6 following orientin administration. The translational relevance of these findings to human physiology remains uncertain, and appropriate human dosing has not been established.
Safety & Interactions
Orientin has not been evaluated for safety in controlled human clinical trials, making a definitive side effect and interaction profile impossible to establish at this time. Animal studies at pharmacological doses have not prominently reported hepatotoxicity or acute organ toxicity, but chronic toxicity data are lacking. Due to its demonstrated inhibition of NF-κB and cytokine pathways, orientin may theoretically potentiate the effects of immunosuppressant drugs or NSAIDs, warranting caution in individuals on these medications. Pregnant and breastfeeding individuals should avoid orientin supplements given the complete absence of human safety data in these populations.
Synergy Stack
Hermetica Formulation Heuristic
Also Known As
Luteolin-8-C-glucoside8-GlucosylluteolinLuteolin 8-C-β-D-glucopyranosideC-Glucosylluteolin8-β-D-GlucopyranosylluteolinFlavone C-glycosideLuteolin-8-C-β-glucoside
Frequently Asked Questions
What is orientin and what foods contain it?
Orientin is a naturally occurring C-glycosyl flavone (specifically vitexin-2''-O-glucoside framework) identified in passion flower (Passiflora incarnata), bamboo leaves, millet, and certain varieties of Vitex agnus-castus. It is also detectable in small amounts in some herbal teas, including rooibos and buckwheat tea, where it contributes to the overall polyphenol content.
What does orientin do for the brain?
In mouse models, orientin at doses of 14–21 mg/kg improved performance on Morris water maze and passive avoidance tests, suggesting enhanced spatial memory and learning. Researchers attribute these effects to modulation of the MAPK/ERK signaling pathway, which is involved in synaptic plasticity and long-term potentiation. These findings are preliminary and have not been replicated in human subjects.
Can orientin reduce inflammation?
Preclinical animal models of acute lung injury show orientin significantly reduces concentrations of pro-inflammatory cytokines TNF-α, IL-1β, and IL-6, and decreases neutrophil infiltration into lung tissue. This anti-inflammatory effect appears to operate through suppression of NF-κB activation and inhibition of phosphofructokinase (PFK), a glycolytic enzyme linked to inflammatory cell metabolism. No human clinical trials have confirmed these anti-inflammatory effects in a disease context.
What is the studied dosage range for orientin?
Published rodent studies have used intraperitoneal or oral doses ranging from approximately 14 to 21 mg/kg body weight to observe effects on pain thresholds, memory, and inflammation markers. Translating these animal doses directly to humans using allometric scaling would suggest a rough human equivalent dose in the range of 1–3 mg/kg, but this has not been validated in clinical trials. No officially recommended human dose for orientin supplements currently exists.
Is orientin the same as vitexin?
Orientin and vitexin are closely related but structurally distinct C-glycosyl flavones; orientin (also called homoorientin or isoorientin depending on the glycoside position) carries its glucose moiety at the C-6 position of the luteolin backbone, while vitexin carries glucose at the C-8 position of an apigenin backbone. Both compounds are found in similar plant sources and share some overlapping biological activities including antioxidant and anti-inflammatory properties, but they are not identical molecules and should not be used interchangeably in supplement contexts.
How strong is the current research evidence for orientin's health benefits?
Current evidence for orientin is primarily preliminary, based mainly on mouse and animal model studies rather than human clinical trials. While promising results have been observed for pain reduction, cognitive function, and anti-inflammatory effects through mechanisms like MAPK signaling and NLRP3/NF-κB inhibition, these findings have not yet been confirmed in controlled human studies. More research is needed to establish efficacy and safety in humans before strong conclusions can be drawn.
Is orientin safe to take with common medications?
Limited human data exists on orientin's interactions with medications, as most research has been conducted in animal models. Given its potential mechanisms involving signaling pathways and inflammatory modulation, individuals taking anticoagulants, anti-inflammatory drugs, or medications affecting blood pressure should consult a healthcare provider before supplementing. No major drug interactions have been documented in available literature, but the lack of comprehensive human studies means risks cannot be fully ruled out.
Who would benefit most from orientin supplementation?
Based on preliminary research, orientin may be of interest to individuals concerned with cognitive performance, chronic pain management, or inflammatory conditions, though human evidence is limited. The ingredient shows promise in animal models for neuroprotection and pain threshold enhancement, making it potentially relevant for those with age-related cognitive decline or chronic inflammatory disorders. However, without human clinical data, it is premature to recommend orientin supplementation for any specific population over established alternatives.
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