# Peonidin

**Canonical URL:** https://ingredients.hermeticasuperfoods.com/ingredients/peonidin
**Data Source:** Hermetica Superfoods Ingredient Encyclopedia
**Updated:** 2026-03-30
**Evidence Score:** 2 / 10
**Category:** Compound
**Also Known As:** Peonidin chloride, 3,5,7-trihydroxy-2-(4-hydroxy-3-methoxyphenyl)chromenylium, Paeonidol, Peonidin-3-glucoside, Peonidin-3-galactoside, Methylcyanidin, 4'-methoxycyanidin

## Overview

Peonidin is a naturally occurring anthocyanin pigment found in red and purple fruits such as blueberries, cherries, and red cabbage. It exerts [antioxidant](/ingredients/condition/antioxidant), [anti-inflammatory](/ingredients/condition/inflammation), and anti-metastatic effects primarily by modulating NF-κB signaling, matrix metalloproteinase activity, and MAPK pathway regulation.

## Health Benefits

• Reduces [inflammatory](/ingredients/condition/inflammation) gene expression in adipocytes when combined with malvidin (in vitro study, PMID: 27889107).
• Inhibits lung cancer metastasis by downregulating MMPs and MAPK pathway (in vitro study, PMID: 20432172).
• Alleviates symptoms of colitis and modulates gut microbiota in a mouse model (PMID: 39967148).
• Promotes osteoblast proliferation in vitro, potentially aiding [bone health](/ingredients/condition/bone-health) (PMCID: PMC8942084).
• Decreases lipid accumulation in cell models of NAFLD (in vitro study).

## Mechanism of Action

Peonidin suppresses inflammatory gene expression in adipocytes by inhibiting NF-κB-driven transcription of [pro-inflammatory cytokine](/ingredients/condition/inflammation)s, an effect enhanced when combined with malvidin. In lung cancer models, it downregulates matrix metalloproteinases MMP-2 and MMP-9 while inhibiting ERK and JNK branches of the MAPK signaling cascade, thereby reducing tumor cell invasion and metastasis. Additionally, peonidin modulates gut microbiota composition and attenuates colitis-associated inflammation, likely through [oxidative stress](/ingredients/condition/antioxidant) reduction and restoration of [intestinal barrier integrity](/ingredients/condition/gut-health).

## Clinical Summary

The current evidence base for peonidin is predominantly preclinical, derived from in vitro cell culture studies and rodent models rather than human clinical trials. A 2017 in vitro study (PMID: 27889107) demonstrated that peonidin combined with malvidin reduces [inflammatory](/ingredients/condition/inflammation) gene expression in adipocytes, though synergistic dosing parameters in humans remain undefined. A 2010 in vitro investigation (PMID: 20432172) showed inhibition of lung cancer cell metastasis via MMP and MAPK pathway downregulation, but translation to human oncology outcomes has not been established. Mouse model colitis data support gut microbiota modulation, yet optimal dosages, bioavailability, and efficacy in human populations require well-designed randomized controlled trials before firm clinical recommendations can be made.

## Nutritional Profile

Peonidin (3'-O-methylcyanidin) is a methylated anthocyanidin with the molecular formula C₁₆H₁₃O₆⁺ and a molecular weight of 301.27 g/mol. It is not a nutritional source of macronutrients (protein, fat, carbohydrates, fiber) but rather a bioactive flavonoid pigment belonging to the anthocyanidin subclass of polyphenols. Key characteristics: • Structure: Differs from cyanidin by a single methoxy group (-OCH₃) at the 3' position on the B-ring, which influences its stability, color (reddish-purple), and bioactivity. • Dietary sources and approximate concentrations: Found primarily as peonidin-3-O-glucoside in purple sweet potatoes (~10–80 mg/100 g fresh weight), blueberries (~1–15 mg/100 g), cranberries (~3–15 mg/100 g), grapes (particularly red/purple varieties, ~1–10 mg/100 g), purple corn (~30–200 mg/100 g dry weight), and chokeberries (trace to ~5 mg/100 g). • Glycosylated forms: Predominantly occurs in nature as peonidin-3-O-glucoside (Pn3G), peonidin-3-O-galactoside, peonidin-3-O-arabinoside, and acylated derivatives (e.g., peonidin-3-caffeoyl-sophoroside-5-glucoside in purple sweet potato). • Bioavailability: Like most anthocyanidins, peonidin has relatively low oral bioavailability (estimated <1–5% of ingested dose reaching systemic circulation intact). It is rapidly absorbed in the stomach and small intestine primarily in glycosylated forms. Peonidin-3-O-glucoside is detected in plasma within 0.5–2 hours post-ingestion, with peak plasma concentrations typically in the low nanomolar range (approximately 1–100 nM depending on dose). The methylated structure at the 3' position confers slightly greater metabolic stability and enhanced bioavailability compared to non-methylated anthocyanidins like cyanidin and delphinidin, as the methoxy group partially protects against phase II conjugation. • [Metabolism](/ingredients/condition/weight-management): Undergoes extensive phase I and phase II metabolism (glucuronidation, sulfonation, methylation) in enterocytes and the liver. Major metabolites include peonidin glucuronides, peonidin sulfates, and degradation products such as vanillic acid (4-hydroxy-3-methoxybenzoic acid) and protocatechuic acid. Unabsorbed peonidin glycosides reach the colon where gut microbiota cleave the sugar moiety and further degrade the aglycone into phenolic acids (e.g., vanillic acid, 3-methoxy-4-hydroxyphenylacetic acid). • Antioxidant capacity: Exhibits moderate to strong [antioxidant activity](/ingredients/condition/antioxidant) with an ORAC value lower than delphinidin but comparable to cyanidin; the methoxy substitution slightly reduces radical scavenging capacity relative to a free hydroxyl at the same position but enhances lipophilicity and membrane interaction. • No significant vitamin or mineral content as an isolated compound. • Stability: More stable than delphinidin and cyanidin at physiological pH due to the methylated B-ring; acylated forms (common in purple sweet potato) exhibit further enhanced stability to pH, light, and heat.

## Dosage & Preparation

No clinically studied dosages in humans are available. In vitro studies used concentrations like 1-20 μg/ml P3G for osteoblast proliferation. Consult a healthcare provider before starting any new supplement.

## Safety & Drug Interactions

Peonidin is generally regarded as safe when consumed through dietary sources such as berries, cherries, and red wine at typical food intake levels, with no established tolerable upper intake level for isolated supplemental forms. No serious adverse effects have been documented in preclinical studies, though high-dose isolated anthocyanin supplements may theoretically cause gastrointestinal discomfort such as bloating or loose stools in sensitive individuals. Peonidin's [antioxidant](/ingredients/condition/antioxidant) and potential [anti-inflammatory](/ingredients/condition/inflammation) properties raise theoretical concerns about interactions with immunosuppressant drugs or chemotherapy agents, warranting caution and physician consultation in those populations. Safety data during pregnancy and lactation are insufficient, so isolated peonidin supplements should be avoided in these groups pending further research.

## Scientific Research

The research on peonidin is primarily preclinical, with no human clinical trials or RCTs found. Key studies include in vitro and animal models focusing on [inflammation](/ingredients/condition/inflammation), cancer inhibition, and gut health (PMIDs: 27889107, 20432172, 39967148).

## Historical & Cultural Context

There is no documented historical or traditional use of peonidin in the sources available. Its use has been primarily studied in modern scientific contexts.

## Synergistic Combinations

Malvidin, Resveratrol, Quercetin, Curcumin, Green Tea Extract

## Frequently Asked Questions

### What foods are highest in peonidin?

Peonidin is found in highest concentrations in blueberries, bilberries, black raspberries, red cherries, red cabbage, and elderberries. Concord grapes and red wine also contain measurable amounts, with levels varying based on cultivar, ripeness, and processing methods.

### Can peonidin help with cancer?

Preclinical in vitro data (PMID: 20432172) show peonidin inhibits lung cancer cell metastasis by downregulating MMP-2, MMP-9, and the MAPK signaling pathway, reducing invasive capacity of cancer cells. However, no human clinical trials have confirmed anticancer efficacy, so peonidin should not be used as a cancer treatment or substitute for conventional oncology care.

### Is peonidin the same as peonidine or peonidin-3-glucoside?

Peonidin is the aglycone (sugar-free) anthocyanin base, while peonidin-3-glucoside is its glycosylated form in which a glucose molecule is attached at the 3-position, which is how it typically occurs naturally in plant foods. Peonidine is simply an alternate spelling of the same compound. The glycosylated forms are more water-soluble and bioavailable from food sources.

### How does peonidin reduce inflammation?

Peonidin suppresses inflammatory signaling primarily by inhibiting NF-κB-mediated transcription of pro-inflammatory cytokines such as IL-6 and TNF-α, as demonstrated in adipocyte models. When combined with malvidin, this effect on inflammatory gene expression in fat cells is significantly amplified (PMID: 27889107), suggesting additive or synergistic anthocyanin interactions.

### What is the difference between peonidin and cyanidin?

Peonidin and cyanidin are both B-ring-substituted anthocyanidins; cyanidin has two hydroxyl groups on the B-ring while peonidin has one hydroxyl and one methoxy group at the 3'-position, making peonidin the O-methylated derivative of cyanidin. This structural difference slightly alters their antioxidant potency and metabolic stability, with peonidin's methoxy group potentially enhancing intestinal permeability and cellular uptake in certain tissue models.

### Does peonidin have better bioavailability when consumed from food sources versus supplements?

Peonidin bioavailability is generally limited due to poor intestinal absorption and rapid metabolism by the gut microbiota and liver. Food sources containing peonidin (like black rice and berries) provide it in a complex matrix with other compounds that may enhance or inhibit absorption differently than isolated supplements. Current research suggests that the presence of other anthocyanins and dietary fibers in whole foods may improve overall polyphenol bioavailability compared to single-ingredient supplements, though direct comparative studies are limited.

### What is the current clinical evidence quality for peonidin's health benefits in humans?

Most peonidin research to date has been conducted in vitro (cell-based) or in animal models, with limited human clinical trials available. While promising effects on inflammation, bone health, and cancer pathways have been demonstrated in laboratory and rodent studies, these results have not been consistently replicated in large-scale human trials. More rigorous human studies are needed before strong clinical recommendations can be made regarding peonidin supplementation for specific health conditions.

### Is peonidin safe to take alongside common anti-inflammatory or cancer medications?

There is insufficient clinical data on peonidin-drug interactions with medications like NSAIDs, corticosteroids, or chemotherapy agents. Because peonidin may modulate inflammatory pathways and MAPK signaling in cancer contexts, concurrent use with certain medications warrants medical supervision. Anyone taking prescription medications, particularly those for cancer treatment or chronic inflammation, should consult a healthcare provider before adding peonidin supplements to their regimen.

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*Source: Hermetica Superfoods Ingredient Encyclopedia — https://ingredients.hermeticasuperfoods.com*
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