# Poke Root (Phytolacca americana)

**Canonical URL:** https://ingredients.hermeticasuperfoods.com/ingredients/poke-root
**Data Source:** Hermetica Superfoods Ingredient Encyclopedia
**Updated:** 2026-04-04
**Evidence Score:** 2 / 10
**Category:** Native American
**Also Known As:** American Pokeweed, Pokeweed, Pokeberry Root, Scoke, Virginia Poke, Inkberry Root, Pigeon Berry Root, Cancer Root, Redweed, Garget Root, Coakum, Pocan

## Overview

Poke root (Phytolacca americana) contains pokeweed mitogen (PWM), a lectin-type glycoprotein that selectively stimulates T-lymphocyte proliferation and immune signaling in laboratory settings. Its triterpene saponins, particularly phytolaccagenin and esculentoside A, also demonstrate [anti-inflammatory](/ingredients/condition/inflammation) and [antiviral](/ingredients/condition/immune-support) properties, though clinical human data remain extremely limited and the plant carries serious toxicity risks.

## Health Benefits

• [Immune system](/ingredients/condition/immune-support) stimulation through pokeweed mitogen (PWM), a T-cell mitogen that stimulates lymphocyte proliferation (in vitro evidence only)
• [Anti-inflammatory](/ingredients/condition/inflammation) effects via triterpene saponins like phytolaccagenin through potential membrane interactions (preliminary evidence)
• Antiviral activity from pokeweed antiviral protein (PAP) which inhibits protein synthesis in viruses (in vitro evidence only)
• Traditional use for rheumatism and arthritis relief (historical evidence only, no clinical validation)
• Lymphatic support for swelling and infections in folk herbalism (traditional use only, no clinical studies)

## Mechanism of Action

Pokeweed mitogen (PWM) acts as a T-cell mitogen by binding to carbohydrate residues on lymphocyte surface glycoproteins, triggering polyclonal T-cell and B-cell proliferation and upregulating interleukin-2 (IL-2) production in vitro. The triterpene saponins phytolaccagenin and phytolaccosides disrupt inflammatory signaling by interacting with cell membrane phospholipids and inhibiting cyclooxygenase (COX) enzyme activity, reducing [prostaglandin](/ingredients/condition/inflammation) synthesis. Additionally, phytolacca [antiviral](/ingredients/condition/immune-support) protein (PAP), a ribosome-inactivating protein (RIP), depurinates 28S ribosomal RNA in virally infected cells, thereby halting viral protein synthesis at the translational level.

## Clinical Summary

Human clinical evidence for poke root is virtually nonexistent; the majority of supporting data derives from in vitro cell studies and animal models, with no randomized controlled trials published as of 2024. In vitro studies using isolated PWM have reliably demonstrated lymphocyte proliferation in human blood samples, establishing a mechanistic basis for immune activity, but this does not translate to safe oral supplementation. Animal studies with PAP-conjugated immunotoxins have shown targeted [antiviral](/ingredients/condition/immune-support) and antitumor effects at microgram-per-kilogram doses, primarily in HIV and leukemia research contexts. Historical use in Eclectic medicine was documented anecdotally for lymphatic conditions, but no modern dose-response or safety trials in humans have been conducted, making evidence quality extremely low.

## Nutritional Profile

{"macronutrients": {"protein": "Approximately 2.5 grams per 100 grams of fresh leaves", "fiber": "Approximately 3 grams per 100 grams of fresh leaves"}, "micronutrients": {"vitamin_A": "Approximately 800 IU per 100 grams of fresh leaves", "vitamin_C": "Approximately 30 mg per 100 grams of fresh leaves", "calcium": "Approximately 250 mg per 100 grams of fresh leaves", "iron": "Approximately 3 mg per 100 grams of fresh leaves"}, "bioactive_compounds": {"phytolaccagenin": "Present in triterpene saponins, concentration not well-documented", "pokeweed_[antiviral](/ingredients/condition/immune-support)_protein": "Concentration not well-documented, primarily studied in vitro"}, "bioavailability_notes": "Nutrients and bioactive compounds may vary based on plant maturity and preparation methods. Cooking is recommended to reduce toxicity."}

## Dosage & Preparation

No clinically studied dosage ranges for poke root extracts, powders, or standardized forms are available, as human trials are absent. Standardization details to triterpenoid saponins or pokeweed mitogen are not provided for any studied preparations. Due to toxic triterpene saponins causing gastrointestinal distress and potential severe poisoning, all plant parts except properly cooked young shoots are considered unsafe. Consult a healthcare provider before starting any new supplement.

## Safety & Drug Interactions

Poke root is highly toxic at all plant parts, with roots containing the highest concentrations of phytolaccatoxin and phytolaccigenin; ingestion of even small amounts (as little as a few berries in children) can cause severe vomiting, diarrhea, hypotension, respiratory depression, seizures, and death. PWM can induce non-specific immune activation and has been associated with chromosomal abnormalities in proliferating lymphocytes at high doses in laboratory settings, raising concerns about mutagenicity. Poke root is absolutely contraindicated during pregnancy and breastfeeding due to demonstrated abortifacient effects and potential transfer of toxins to infants. It should not be combined with immunosuppressant drugs (e.g., cyclosporine, corticosteroids), anticoagulants, or any lymphocyte-modulating therapies, as PWM-driven immune stimulation may unpredictably override pharmacological immunosuppression.

## Scientific Research

No human clinical trials, RCTs, or meta-analyses on poke root (Phytolacca americana) were identified in the available research. The ingredient appears only as a minor component in homeopathic formulations like Lymphapar and MBM 13, but no specific study designs, sample sizes, or outcomes for poke root alone are documented. Traditional claims for [anti-inflammatory](/ingredients/condition/inflammation) or immune effects lack modern clinical validation.

## Historical & Cultural Context

In Native American and early European settler traditions (North America, 17th-19th centuries), poke root was used for rheumatism, arthritis, scrofula, and as an emetic or purgative, with ashes applied topically for ulcers and skin cancers due to high potassium content. It features in global folk herbalism for lymphatic swelling and infections, but not prominently in formalized systems like Ayurveda or TCM beyond minor 'Shanglu' references.

## Synergistic Combinations

Echinacea, Astragalus, Elderberry, Cleavers, Red Clover

## Frequently Asked Questions

### Is poke root safe to take as a supplement?

Poke root is not considered safe for unsupervised self-supplementation; all plant parts contain phytolaccatoxin, a steroidal saponin with potent cytotoxic effects. Oral ingestion has caused documented poisoning cases requiring emergency care, and no established therapeutic dose has been validated in human clinical trials. Homeopathic preparations diluted beyond Avogadro's number may carry negligible toxin levels, but standardized extract products at physiologically active doses pose serious risk.

### What is pokeweed mitogen (PWM) used for in research?

Pokeweed mitogen is widely used in immunology laboratories as a polyclonal activator to stimulate both T-cells and B-cells simultaneously, making it a standard research tool for studying lymphocyte proliferation and cytokine secretion in vitro. Researchers use PWM at concentrations of approximately 1–10 micrograms per milliliter in cell culture to induce IL-2, IgG, and IgM production. Despite this utility as a research reagent, PWM's value as a therapeutic agent in living humans has not been clinically established.

### What antiviral compounds are found in poke root?

The primary antiviral compound in poke root is phytolacca antiviral protein (PAP), a type I ribosome-inactivating protein (RIP) that cleaves a specific adenine residue from the 28S ribosomal RNA loop, thereby halting viral protein synthesis. PAP has been studied experimentally as an immunotoxin component in HIV and herpes simplex virus (HSV) research, conjugated to antibodies for targeted delivery. However, PAP is also acutely cytotoxic to healthy cells at systemic doses, which has prevented its development as a standalone oral antiviral supplement.

### Did Native Americans use poke root medicinally?

Yes, multiple Native American tribes, including Cherokee, Iroquois, and Algonquian peoples, used poke root topically and internally for conditions such as skin diseases, rheumatic pain, and lymphatic swelling, with careful preparation methods to reduce toxicity. 19th-century Eclectic physicians later adopted it as a lymphagogue and anti-inflammatory agent, typically using root tinctures in very low doses (1–5 drops). These historical applications were empirical rather than evidence-based, and modern toxicology has confirmed that traditional preparation methods only partially reduce phytolaccatoxin content.

### Can poke root help with lymph node swelling?

Poke root has a long traditional reputation as a lymphagogue—a substance believed to stimulate lymphatic drainage—and was specifically prescribed by Eclectic physicians for swollen or indurated lymph nodes at doses of 0.1–0.3 mL of fluid extract. The proposed mechanism involves triterpene saponin-mediated membrane perturbation and PWM-driven immune activation promoting lymphocyte trafficking. However, no controlled human studies have validated this effect, and the risk of toxicity at doses sufficient to produce lymphatic activity is considered unacceptably high by contemporary medical and regulatory standards.

### What is the difference between poke root and poke berry, and are they used interchangeably in supplements?

Poke root and poke berry come from the same plant (Phytolacca americana) but refer to different parts—the root versus the fruit—and contain different concentration profiles of active compounds. Supplements typically use the root rather than the berry due to higher concentrations of saponins and other bioactive compounds, though they are sometimes used together in traditional preparations. The root is generally preferred in modern supplementation for standardized potency.

### Does poke root need to be processed or standardized to be effective, or is raw poke root supplement adequate?

Poke root supplements are typically processed and often standardized for saponin content to ensure consistent potency and safety, as raw unprepared root carries significant toxicity risks. Processing methods such as extraction, drying, and standardization help concentrate the beneficial compounds like phytolaccagenin while reducing potentially harmful constituents. Standardized extracts are preferred over raw material for reliable dosing and reduced toxin exposure.

### What does current clinical evidence show about poke root's effectiveness compared to its traditional use claims?

Most evidence for poke root comes from in vitro studies and traditional use rather than human clinical trials, meaning its real-world effectiveness in humans remains largely unproven. Research on pokeweed mitogen (PWM) and pokeweed antiviral protein (PAP) shows promise in laboratory settings for immune stimulation and antiviral activity, but these findings have not been consistently replicated in controlled human studies. The gap between laboratory evidence and clinical efficacy underscores the need for rigorous human trials before making strong health claims.

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