Eranda Patra

Names and identification

Language	Name
English	Eranda Patra
Latin/Botanical	Ricinus communis L. (leaves)

Key Phytochemical Constituents

• Ricinine (alkaloid)
• Rutin
• Phytol
• Phytyl palmitate
• Kaempferol
• Quercetin
• Gallic acid
• N-demethylricinine
• Beta-sitosterol
• Tannins

How does it work?

• Ricinine alkaloid exhibits anti-inflammatory activity through inhibition of NF-kB pathway and suppression of pro-inflammatory cytokines (TNF-alpha, IL-1beta, IL-6) in macrophage models
• Flavonoids (rutin, kaempferol, quercetin) provide wound healing activity by promoting fibroblast proliferation, collagen synthesis, and angiogenesis while reducing oxidative stress at wound sites
• Phytol acts as an immunomodulator and anti-inflammatory agent by modulating the Nrf2/HO-1 pathway and reducing reactive oxygen species generation in inflammatory tissue

Which traditional uses are supported by research?

• Anti-inflammatory and analgesic effects validated in carrageenan-induced paw edema and acetic acid writhing models, supporting traditional Ayurvedic use of Eranda Patra poultice for Vataroga (pain and inflammation)
• Wound healing activity confirmed through in vivo studies showing enhanced granulation and epithelialization, supporting traditional topical application for Vrana (wounds)
• Antibacterial properties validated against multiple pathogenic bacteria, supporting traditional use for infectious conditions

What do recent clinical trials show?

• Ramothloa TP, Mkolo NM, Motshudi MC and others 2025. Phytochemical Composition and Multifunctional Applications of Ricinus communis L.: Insights into Therapeutic, Pharmacological, and Industrial Potential. Molecules (Basel, Switzerland). PMID 40807390 · doi:10.3390/molecules30153214
  GC-MS analysis of leaf extracts revealed 48-53 peaks identifying dominant compounds including phytol, phytyl palmitate, and tetracontane with significant antibacterial and anti-inflammatory activities.
• Ramothloa TP, Mkolo NM, Motshudi MC and others 2025. Phytochemical Composition and Multifunctional Applications of Ricinus communis L.: Insights into Therapeutic, Pharmacological, and Industrial Potential. Molecules (Basel, Switzerland). PMID 40807390 · doi:10.3390/molecules30153214
  Leaf extracts demonstrated significant anti-inflammatory, analgesic, and antibacterial effects supporting traditional medicinal applications; chloroform fraction showed highest antibacterial efficacy.

1 further claim previously listed here could not be traced to a published paper and has been removed. An absence here means we could not identify the source, not that no work exists.

Recent safety updates

• Castor leaves contain ricinine alkaloid which is toxic at high concentrations (though much less toxic than ricin found in seeds); topical use is generally safer than internal administration
• Traditional Ayurvedic practice uses castor leaves primarily as external poultice (Patra Pinda Sweda) for joint pain, which minimizes systemic toxicity concerns
• Internal use of leaf preparations should be limited and under medical supervision; avoid during pregnancy and lactation; monitor liver function with prolonged use

Dosage forms and preparation

Dosage Forms: Swarasa (fresh leaf juice), Lepa (leaf paste for external use), Churna (dried leaf powder), Taila (leaf-medicated oil), Poultice (traditional Patra Pinda Sweda)

Standard Dosage: External use primarily: leaf paste/poultice applied to affected area; 5-10ml fresh leaf juice (limited internal use, practitioner guidance); 3-5g dried leaf powder twice daily

Bioavailability: Castor leaves (Ricinus communis) contain flavonoids (quercetin, kaempferol glycosides), ricinine (low levels), and leaf-specific terpenoids. Topical application of leaf paste provides direct local anti-inflammatory and analgesic effect. Percutaneous absorption of flavonoids is enhanced by leaf mucilage and natural surfactants. For internal use (limited), flavonoid bioavailability is moderate. Patra Pinda Sweda (leaf bolus steam therapy) delivers volatiles through dermal and inhalation routes simultaneously. Fresh leaf juice has higher bioactive content than dried material.

Optimal Timing: External application: warm poultice or paste applied to affected joints/muscles, preferably in the evening. Patra Pinda Sweda: therapeutic sessions typically 30-45 minutes. Internal use: before meals if prescribed.

Standardized Extract: Leaf extract standardized by total flavonoid content NLT 2% (as quercetin equivalent) and ricinine content (for safety monitoring). Extract ratio 6:1 for dried leaf extract.

Shelf Life: Fresh leaves: use within 24 hours; 1 year (dried leaf powder); 2 years (Taila); Pinda Sweda bolus: prepare fresh for each session

Storage: Fresh leaves: cool, damp cloth wrapping, refrigerate. Dried leaf powder: airtight, light-resistant containers below 25 deg C. Taila: amber glass bottles at room temperature.

Marker Compounds: Quercetin, Kaempferol, Ricinine (trace - safety marker), Rutin, Beta-sitosterol, Chlorophyll content (freshness indicator)

Extraction Methods

• Fresh leaf juice expression (Swarasa)
• Leaf paste preparation (Kalka) for topical use
• Aqueous decoction of dried leaves
• Sesame oil-based leaf Taila (traditional oil processing)
• Leaf bolus preparation for Patra Pinda Sweda therapy

Synergistic Combinations

• With Nirgundi leaves in Patra Pinda Sweda for musculoskeletal pain
• With Eranda Taila for comprehensive anti-Vata therapy
• With Haridra paste for anti-inflammatory poultice
• With Rasna and Devadaru in Vata-pacifying external formulations