# Eranda Paka

> Eranda Paka (Ricinus communis L. (processed castor preparation)) is a plant used in Ayurveda, from the Euphorbiaceae family. [Phytochemical Composition and Multifunctional Applications of Ricinus communis L.: Insights into Therapeutic, Pharmacological, and Industrial Potential](https://pubmed.ncbi.nlm.nih.gov/40807390/).

## Key facts

- **Botanical name:** Ricinus communis L. (processed castor preparation)
- **Family:** Euphorbiaceae
- **Pharmacopoeia status:** Castor oil (Oleum Ricini) listed in WHO Model List of Essential Medicines as a laxative; Eranda|Eranda Paka specifically referenced in Ayurvedic Formulary of India; ricin classified as Schedule 1 substance under Chemical Weapons Convention

## Names and identification

| Language | Name |
|----------|------|
| English | [Eranda](/herb/eranda/) Paka |
| Latin/Botanical | *Ricinus communis L. (processed castor preparation)* |

## Key Phytochemical Constituents

- Ricinoleic acid (primary active)
- Oleic acid
- Linoleic acid
- [Stearic acid](/glossary/compounds-q-t/#stearic-acidstearic-acid)
- Palmitic acid
- [Ricinine](/glossary/compounds-q-t/#ricinine) (alkaloid - reduced by processing)
- Dehydrodihydroxycastor oil
- Undecylenic acid
- [Phytosterols](/glossary/compounds-o-q/#phytosterols)
- [Tocopherols](/glossary/compounds-t-z/#tocopherols)

## How does it work?

- Ricinoleic acid activates EP3 prostaglandin receptors in intestinal smooth muscle, stimulating peristalsis and promoting laxative effects; processing with jaggery moderates the cathartic intensity
- Anti-inflammatory effects mediated through ricinoleic acid's inhibition of COX-2 and 5-LOX pathways, reducing prostaglandin and leukotriene synthesis in joint and muscle tissue
- Processing (Paka vidhi) with jaggery/sugar reduces ricinine alkaloid content while enhancing bioavailability of ricinoleic acid, providing a safer therapeutic preparation than raw castor oil

## Which traditional uses are supported by research?

- Laxative and purgative (Virechana) activity thoroughly validated through pharmacological studies confirming ricinoleic acid-mediated stimulation of intestinal motility, supporting core Ayurvedic indication
- Anti-arthritic and anti-rheumatic effects validated in preclinical models showing reduction of joint inflammation and pain, supporting traditional use for Amavata (rheumatoid conditions)
- Digestive stimulant (Deepana) activity confirmed through studies showing enhanced gastric motility and secretion when processed with jaggery

## 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](https://pubmed.ncbi.nlm.nih.gov/40807390/). *Molecules (Basel, Switzerland)*. PMID [40807390](https://pubmed.ncbi.nlm.nih.gov/40807390/) · [doi:10.3390/molecules30153214](https://doi.org/10.3390/molecules30153214)  
  Comprehensive review documenting the diverse therapeutic applications of castor-derived preparations including anti-inflammatory, [antimicrobial](/reference/antimicrobial/), laxative, and wound healing properties across different formulation types.
- 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](https://pubmed.ncbi.nlm.nih.gov/40807390/). *Molecules (Basel, Switzerland)*. PMID [40807390](https://pubmed.ncbi.nlm.nih.gov/40807390/) · [doi:10.3390/molecules30153214](https://doi.org/10.3390/molecules30153214)  
  Essential oil, beta-[sitosterol](/glossary/compounds-q-t/#sitosterol), cepharadiones, and [piperine](/reference/piperine/)-like compounds identified as key pharmacologically active constituents with [antioxidant](/reference/antioxidant/), anti-inflammatory, and antimicrobial activities.

*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

- [Eranda](/herb/eranda/) Paka (processed preparation) is considered much safer than raw castor seeds due to destruction of ricin toxin and reduction of ricinine during traditional processing with heat and jaggery
- Raw castor seeds are extremely toxic (ricin is lethal at 1-10 mg in adults); only properly processed preparations should be used medicinally under qualified supervision
- Excessive use may cause dehydration, electrolyte imbalance, and abdominal cramping; contraindicated in pregnancy (uterotonic effects), intestinal obstruction, and inflammatory bowel conditions

## Dosage forms and preparation

**Dosage Forms:** Paka (processed confection - primary form), Modified tablet (compressed granules from Paka)

**Standard Dosage:** 10-20g Paka preparation once or twice daily as per classical dosing. Specific dose varies by formulation text followed.

**Bioavailability:** [Eranda](/herb/eranda/) Paka is a processed preparation where castor root or oil is cooked with milk, sugar/jaggery, and supporting herbs following the Paka (confection) method. The lipid matrix (from castor oil or ghee used in Paka) enhances absorption of lipophilic [terpenoids](/glossary/compounds-t-z/#terpenoids) and [sterols](/glossary/compounds-q-t/#sterols). The sugar matrix provides sustained release. Milk [proteins](/glossary/compounds-o-q/#proteins) may form complexes with [tannins](/reference/tannins/) reducing anti-nutritional effects. The Paka processing converts and concentrates bioactives while reducing harshness. This is a traditionally optimized sustained-release, bioavailability-enhanced formulation.

**Optimal Timing:** Morning on empty stomach or after meals with warm milk, as directed by classical text and practitioner

**Standardized Extract:** Not extract-based. Finished product characterized by: Brix (68-72), water activity (<0.65), total alkaloid content, HPTLC fingerprint, organoleptic consistency.

**Shelf Life:** 1-2 years in airtight glass containers

**Storage:** Airtight glass or food-grade containers at room temperature (below 30 deg C). Use clean dry spoon for dispensing. Protect from moisture and direct sunlight.

**Marker Compounds:** Ricinine (from [Eranda](/herb/eranda/) root), Total [alkaloids](/glossary/compounds-1-a/#alkaloids), Ricinoleic acid (if oil used), Sugar content (Brix)

### Extraction Methods

- Traditional Paka method: root Kashayam + milk + sugar/jaggery cooked to semi-solid consistency
- No extraction per se - the Paka process is the complete manufacturing method
- Ghee or castor oil incorporated during cooking process

### Synergistic Combinations

- Contains synergistic ingredients as per classical formulation
- With warm milk as Anupana for enhanced [Rasayana](/reference/rasayana/) effect
- With Sunthi powder for digestive support alongside the Paka

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Canonical version of this page: https://nighantu.ageayurveda.com/herb/eranda-paka/

## Sources

- Amidha Ayurveda Herb Database (700+ herbs, CC-BY-4.0)
- Web research (clinical trials, WHO monographs, safety databases)
- Ayurvedic Pharmacopoeia of India

Published by Age Ayurveda in the Nighantu. Educational reference only, not medical advice.
Incorporates material from the Amidha Ayurveda Herb Database under CC BY 4.0.