Hermetica Superfood Encyclopedia
The Short Answer
Acteoside, also called verbascoside, is a phenylpropanoid glycoside composed of caffeic acid, hydroxytyrosol, and two sugar moieties found in numerous medicinal plants. It exerts its primary effects through inhibition of protein kinase C and modulation of MAPK signaling pathways, contributing to anti-inflammatory and cytoprotective activity.
CategoryNamed Bioactive Compounds
GroupCompound
Evidence LevelModerate
Primary Keywordacteoside benefits
Synergy Pairings5
Acteoside (verbascoside) — botanical close-up
Health Benefits
Origin & History
Natural habitat
Acteoside (verbascoside) is a polyphenol glycoside composed of caffeic acid and hydroxytyrosol, with a molecular weight of 624.6 g/mol. It occurs naturally in various plants such as Verbascum species, from which it derives its alternate name verbascoside. The compound is typically extracted from plant sources, though specific extraction methods are not detailed in available research.
“No information on traditional medicine use or historical applications of acteoside is available in the current research. The compound's name derives from Verbascum species plants, but traditional usage patterns are not documented.”Traditional Medicine
Scientific Research
The available research on acteoside lacks human clinical trials, randomized controlled trials, or meta-analyses. Current evidence is limited to in vitro studies demonstrating antimicrobial and anti-inflammatory properties through protein kinase C inhibition.
Preparation & Dosage
Traditional preparation
No clinically studied dosage ranges are available for acteoside in any form (extract, powder, or standardized preparations). Human dosing protocols have not been established through clinical research. Consult a healthcare provider before starting any new supplement.
Nutritional Profile
Acteoside (verbascoside) is a phenylpropanoid glycoside (phenylethanoid glycoside) and not a conventional food nutrient, so it does not contribute macronutrients, vitamins, or minerals in a dietary sense. Molecular weight: 624.59 g/mol. Chemical formula: C29H36O15. It is a secondary plant metabolite found at varying concentrations depending on source plant: approximately 0.1–3.5% dry weight in Verbascum species, 0.5–2% in Olea europaea leaves, up to 4% in Cistanche tubulosa (a concentrated medicinal source), and trace amounts (0.01–0.5%) in common herbs such as oregano and rosemary. As a glycoside, it consists of a hydroxytyrosol unit linked to caffeic acid and two sugar moieties (rhamnose and glucose), contributing to its polyphenolic antioxidant character. ORAC-equivalent antioxidant capacity is high relative to molecular weight, with free radical scavenging IC50 values reported at approximately 2–8 μM in DPPH assays. Bioavailability is limited due to glycoside hydrolysis in the gut; oral bioavailability in animal models is estimated at 1–5% of ingested dose, with metabolites including hydroxytyrosol and caffeic acid detectable in plasma. It is not a source of dietary fiber, protein, fat, or micronutrients. Studied doses in research contexts range from 10–100 mg/kg in animal models; human clinical dose equivalents are not firmly established.
How It Works
Mechanism of Action
Acteoside inhibits protein kinase C (PKC) with an IC50 of approximately 25 μM, disrupting downstream phosphorylation cascades involved in inflammatory gene expression. It also modulates mitogen-activated protein kinase (MAPK) pathways, including ERK and p38 signaling, which regulate cellular stress responses and apoptosis. Additionally, its caffeic acid moiety contributes to free radical scavenging activity, reducing oxidative damage to lipids and proteins.
Clinical Evidence
Research on acteoside remains largely preclinical, with most evidence derived from in vitro cell assays and rodent models rather than human clinical trials. Antimicrobial studies report minimum inhibitory concentrations (MIC) of 4–128 μg/ml against Staphylococcus aureus and related pathogens, depending on the bacterial strain and preparation. Animal studies have demonstrated reductions in inflammatory markers such as TNF-α and IL-6, though dose translation to humans remains uncertain. No large-scale randomized controlled trials have been completed as of current literature, making all therapeutic claims preliminary.
Safety & Interactions
Acteoside has demonstrated a generally favorable safety profile in animal toxicity studies at typical experimental doses, but human safety data are limited. Because it inhibits protein kinase C, caution is theoretically warranted when combining it with immunosuppressant drugs or kinase-targeting pharmaceuticals, as additive or antagonistic effects are possible. Pregnant and breastfeeding individuals should avoid supplementation due to the absence of safety data in these populations. Individuals taking anticoagulant medications should exercise caution, as the caffeic acid component may have mild platelet-affecting properties.
Synergy Stack
Hermetica Formulation Heuristic
Also Known As
VerbascosideKusagininOrobanchosideβ-(3,4-dihydroxyphenyl)ethyl-O-α-L-rhamnopyranosyl-(1→3)-β-D-(4-O-caffeoyl)-glucopyranosidePhenylpropanoid glycosideCaffeic acid glycoside ester
Frequently Asked Questions
What is acteoside (verbascoside) and what plants is it found in?
Acteoside, synonymously called verbascoside, is a phenylethanoid glycoside composed of caffeic acid, hydroxytyrosol, rhamnose, and glucose. It is naturally found in plants such as Verbascum species (mullein), Olea europaea (olive), Cistanche tubulosa, and Rehmannia glutinosa, many of which have longstanding use in traditional medicine.
What is the anti-inflammatory mechanism of acteoside?
Acteoside inhibits protein kinase C (PKC) at an IC50 of approximately 25 μM, a key enzyme that amplifies pro-inflammatory signaling through NF-κB and MAPK pathways. By suppressing these cascades, acteoside reduces downstream production of inflammatory cytokines including TNF-α and IL-6, primarily demonstrated in cell culture and rodent studies.
Does acteoside have antimicrobial properties against Staphylococcus aureus?
Yes, in vitro studies have reported minimum inhibitory concentrations (MIC) of 4–128 μg/ml for acteoside against Staphylococcus aureus, with variability depending on strain resistance profiles and solvent preparation. Activity has also been noted against certain gram-negative bacteria and fungi, though evidence remains preliminary and no clinical human trials have confirmed therapeutic antimicrobial efficacy.
What is the typical dosage of acteoside used in research studies?
Most preclinical studies have used acteoside at concentrations of 10–100 μM in cell-based assays, while rodent studies typically administer 10–50 mg/kg body weight orally or intraperitoneally. No standardized human dosage has been established because clinical trials are lacking, and commercial supplements vary widely in verbascoside content and standardization.
Is acteoside safe to take with other supplements or medications?
Human interaction data for acteoside are currently insufficient to make definitive safety statements. Theoretical interactions exist with immunosuppressants and kinase-targeting drugs due to its PKC-inhibiting activity, and its caffeic acid moiety may weakly influence platelet aggregation, raising potential concern alongside anticoagulants like warfarin. Consulting a healthcare provider before use is strongly advised, particularly for individuals on prescription medications.
How does acteoside compare to other polyphenolic compounds in terms of antioxidant strength?
Acteoside is a phenylethanoid glycoside with polyphenolic properties that enable antioxidant activity, though direct comparative studies with other polyphenols like quercetin or catechin are limited in the literature. Its antioxidant potency appears moderate relative to some pure flavonoids, but its dual anti-inflammatory and antimicrobial mechanisms may provide complementary benefits beyond simple free radical scavenging. Research suggests acteoside's effectiveness may be better evaluated through its specific molecular targets (PKC inhibition, MAPK/ERK modulation) rather than traditional antioxidant assays alone.
What is the bioavailability of acteoside when taken orally, and how is it metabolized in the body?
Acteoside bioavailability from oral supplementation remains poorly characterized, as most evidence derives from in vitro and animal studies rather than human pharmacokinetic data. The compound's glycosidic structure suggests it may undergo gut microbiota metabolism or hepatic glucuronidation, but specific metabolites and systemic absorption rates have not been comprehensively documented in humans. Limited research indicates acteoside may have low oral bioavailability similar to other complex polyphenolic glycosides, potentially limiting systemic exposure from supplemental doses.
What plant sources provide the highest concentrations of acteoside for dietary consumption?
Acteoside is found in high concentrations in Veronica, Buddleja, and Phlomis species, as well as traditional medicinal plants like Brandisia, Rehmannia, and some Acanthaceae family members. Lemon verbena (Aloysia citrodora) and certain Veronica subspecies contain notably elevated levels and have been traditionally used in herbal medicine for this bioactive compound. However, quantitative acteoside content varies significantly by plant species, growing conditions, and harvest timing, making dietary sources inconsistent for achieving the concentrations used in research studies (typically 4-128 μg/ml in vitro).
Explore the Full Encyclopedia
7,400+ ingredients researched, verified, and formulated for optimal synergy.
Browse IngredientsThese statements have not been evaluated by the Food and Drug Administration. This content is for informational purposes only and is not intended to diagnose, treat, cure, or prevent any disease.
hermetica-encyclopedia-canary-zzqv9k4w acteoside curated by Hermetica Superfoods at ingredients.hermeticasuperfoods.com and licensed CC BY-NC-SA 4.0 (non-commercial share-alike, attribution required)
