Capparis zeylanica (Capparaceae) Vyaghranakhi, Indian Caper
Capparis zeylanica (Indian Caper)
Capparis zeylanica, commonly known as Indian Caper or Vyaghranakhi, is a revered medicinal shrub in Ayurveda, classified as a Rasayana drug. It is most notably recognized as a potent immunostimulant, hepatoprotective, and anti-inflammatory agent. The plant exhibits a broad pharmacological profile, demonstrating significant activity against diabetes, inflammation, pain, and microbial infections. Recent cutting-edge research from 2025 has elucidated the molecular mechanisms of its flower's antioxidant properties, identifying γ-sitosterol as a key bioactive compound that targets multiple oxidative stress pathways. The fruit has shown promising antihyperglycemic effects, outperforming related Capparis species in recent comparative studies.
---
1. Taxonomic Insights
Species: Capparis zeylanica L.
Family: Capparaceae (Caper family)
The Capparaceae family comprises shrubs and small trees, often with spiny branches and showy flowers, closely related to the Brassicaceae. They are known for producing glucosinolates and diverse alkaloids with medicinal significance. Capparis zeylanica is a rigid, wiry, much-branched shrub widely distributed across India, Sri Lanka, Bangladesh, and Malaysia.
Taxonomic Note: The plant is known by synonyms Capparis formosa, Capparis ovalifolia, and Capparis rufescens. There is some botanical confusion in classical texts regarding identification. According to Ayurvedic scholar Dalhana, Himsra refers to Capparis sepiaria, while Ahimsra or Gridhranakhi refers to Capparis zeylanica. The plant is also referred to as Vyaghranakhi in traditional medicine systems.
Related Herbs from the Same Family:
· Capparis spinosa (Caper Bush): The source of culinary capers, known for its antioxidant, anti-inflammatory, and hepatoprotective properties.
· Capparis grandis: A related species with traditional uses in diabetes and inflammation, studied comparatively with C. zeylanica.
· Capparis decidua (Kair): Used in traditional medicine for its analgesic, anti-inflammatory, and antidiabetic properties.
· Capparis rotundifolia: Another medicinal Capparis species with documented antihyperglycemic activity.
---
2. Common Names
Scientific Name: Capparis zeylanica L. | English: Indian Caper, Ceylon Caper | Sanskrit: व्याघ्रनखी (Vyaghranakhi), गृध्रनखी (Gridhranakhi), कण्टकालता (Kantakalatha) | Hindi: कंटुस (Kantus), चेलार (Chelar) | Bengali: কলোক লতা (Kolok Lata) | Tamil: अत्तोण्डै (Attondai), अदोण्डै (Adondai) | Telugu: नल्ल उप్పి (Nalla Uppi) | Kannada: ಕಂಟಕಾಲತಾ (Kantakalatha) | Malayalam: കാട്ടുകരി (Kattukari), കർത്തോട്ടി (Karthotti) | Marathi: चिवर (Chivar), वाघनखी (Vaghankhi) | Gujarati: કંટકાલતા (Kantakalata) |
---
3. Medicinal Uses
Primary Actions: Immunomodulatory, Hepatoprotective, Antioxidant, Anti-inflammatory, Analgesic, Antipyretic, Antidiabetic, Antimicrobial, Anthelmintic.
Secondary Actions: Antiulcer, Anticancer, Antiparasitic, Nephroprotective, Cardioprotective, Larvicidal.
Medicinal Parts:
Almost every part of the plant roots, stem bark, leaves, flowers, and fruits is used medicinally.
· Roots: Used for colic, convulsive seizures, and as a sedative. The root is ground with water and administered orally.
· Stem Bark: Used in paralysis treatment and as an appetizer. A paste prepared with black pepper and garlic is used for colic.
· Leaves: Widely used as counter-irritants, febrifuges, and antiulcer agents. Leaf juice is used for dysentery (with black pepper), cough and cold (with goat milk), and as a cataplasm applied to swellings, boils, and piles.
· Flowers: Rich in phenolic compounds and sterols, particularly γ-sitosterol, with potent antioxidant properties. The flower extract has demonstrated significant free radical scavenging activity.
· Fruits: Consumed twice fortnightly for the treatment of diabetes. Ripe fruits are also used for rheumatism and inflammations. Fruits of C. zeylanica are traditionally consumed by local populations in Maharashtra and Telangana states.
---
4. Phytochemicals Specific to the Plant and Their Action
· γ-sitosterol (Sitosterol): A plant-derived phytosterol identified as a key bioactive compound in the flowers. It exhibits potent Antioxidant, Anticancer, and Anti-inflammatory properties. Network pharmacology studies have confirmed its strong binding affinity to multiple oxidative stress-related targets including CASP3, ESR1, VEGFA, MAPK8, HSP90AA1, EGFR, AKT1, STAT3, PTGS2, and SRC.
· Unique Fatty Acid (E-Octadec-7-en-5-ynoic acid): A distinctive acetylenic fatty acid isolated from the roots, reported to be safe for consumption in animal studies.
· Alkaloids: Present in various parts, contributing to Analgesic, Antipyretic, and Anti-inflammatory effects.
· Flavonoids (Kaempferol, Quercetin, derivatives): These compounds provide Antioxidant, Anti-inflammatory, Antiulcer, and Antineoplastic properties. Kaempferol has been identified and characterized from stem extracts.
· Tannins: Abundant in leaves and other parts, providing Astringent, Wound healing, and Antimicrobial properties.
· Phenolic Acids (Vanillic acid, Ferulic acid, p-Coumaric acid): These contribute to Antioxidant and Anti-inflammatory activities.
· Saponins: Present in leaf extracts, contributing to Immunomodulatory, Antifungal, and Cholesterol-lowering effects.
· Terpenoids (α-amyrin, Lupeol derivatives): Identified in stem extracts, providing Anti-inflammatory and Analgesic effects.
· Sterols (β-sitosterol): Contributes to Anti-inflammatory and Antihyperlipidemic effects.
· Glycosides: Present and contributing to the diverse therapeutic profile.
· Phlobatannins: Detected in leaf extracts, contributing to antimicrobial and wound-healing properties.
---
5. Traditional and Ethnobotanical Uses Covering the Medicinal Uses
Ojas Vardhaka (Immunomodulation) & Rasayana (Rejuvenation)
Formulation: Whole plant powder or decoction.
Preparation & Use: As a Rasayana drug in Ayurveda, C. zeylanica is used to enhance immunity and overall vitality. It is particularly recommended for immune disorders.
Reasoning: Research has confirmed potent immunostimulant effects. Oral administration of ethanolic and water extracts of leaves in mice dose-dependently potentiated the delayed-type hypersensitivity reaction induced by sheep red blood cells. The plant's antioxidant properties also support its Rasayana classification.
Madhumeha (Diabetes) & Prameha (Metabolic Disorders)
Formulation: Ripe fruit consumption; stem bark extract.
Preparation & Use: In Ayurveda, ripe fruits are consumed twice fortnightly for the treatment of diabetes. During this period, stem bark extract is also administered thrice daily.
Reasoning: Modern research provides robust validation. A 2025 comparative study on STZ-induced diabetic Wistar rats demonstrated that C. zeylanica extract significantly reduced blood glucose levels and improved body weight, outperforming C. grandis and C. rotundifolia. A 2015 study showed that oral administration of methanolic fruit extract for 28 days significantly reduced blood glucose and enhanced circulating insulin levels in streptozotocin-induced diabetic rats.
Shotha (Inflammation) & Vata Vyadhi (Arthritic Conditions)
Formulation: Leaf paste (external); leaf decoction (internal).
Preparation & Use: Fresh leaves are ground into a paste and applied topically to swollen joints, boils, and inflammatory conditions. The leaf decoction is taken internally for rheumatism.
Reasoning: The anti-inflammatory properties have been validated through pharmacological studies. Flavonoids and terpenoids inhibit pro-inflammatory enzymes and mediators. The plant is specifically indicated for Vataja Shotha (Vata-type inflammation) and is often combined with Rasna for external application.
Jwara (Fever) & Kasa (Cough/Cold)
Formulation: Leaf juice with goat milk; leaf decoction.
Preparation & Use: Leaf juice is consumed along with a cup of fresh goat milk for cough and cold. Leaves are also used as febrifuges.
Reasoning: Studies have confirmed antipyretic effects. The ethanol and water extracts of leaves showed dose-dependent and significant increases in pain threshold and fever reduction. Preliminary phytochemical screening revealed the presence of alkaloids, flavonoids, saponins, glycosides, terpenoids, tannins, proteins, and carbohydrates contributing to these effects.
Atisara (Dysentery) & Grahani (Malabsorption)
Formulation: Leaf juice with black pepper powder.
Preparation & Use: Leaf juice is combined with black pepper powder and consumed for dysentery. The leaves are also used as antiulcer agents.
Reasoning: The astringent tannins and antimicrobial alkaloids help combat pathogenic bacteria causing dysentery. Studies have confirmed antiulcer activity, supporting traditional use in gastrointestinal disorders.
Apasmara (Convulsive Seizures) & Apachi (Scrofula/Swellings)
Formulation: Fresh root paste with onion and jaggery.
Preparation & Use: A handful of fresh roots is ground with 50 grams of onions and 50 grams of jaggery to make a bolus, given twice daily for three days for convulsive seizures.
Reasoning: The sedative and anticonvulsant properties of root alkaloids contribute to this traditional use. The plant is also used for glandular swellings (Granthi).
---
6. Healing Recipes, Decoctions, and Preparations
Immunomodulatory Leaf Decoction
Purpose: To enhance immune function and general vitality.
Preparation & Use:
1. Take 5-10 grams of dried Capparis zeylanica leaves.
2. Simmer in 500 ml of water for 15-20 minutes.
3. Strain and drink 100 ml once or twice daily for short-term immune support.
Antidiabetic Fruit Regimen (Traditional)
Purpose: Supportive therapy for diabetes management.
Preparation & Use:
1. Consume ripe fruits twice fortnightly (every two weeks).
2. During the same period, take stem bark extract thrice daily.
3. Note: Use only under professional supervision as part of a comprehensive diabetes care plan.
Anti-inflammatory Leaf Poultice
Purpose: Topical relief for joint pain, swelling, boils, and piles.
Preparation & Use:
1. Take a handful of fresh Capparis zeylanica leaves.
2. Grind to a smooth paste.
3. Apply directly to the affected area, cover with a clean cloth, and leave for 1-2 hours. Use daily until symptoms subside.
Antipyretic Leaf Infusion
Purpose: For fever and associated symptoms.
Preparation & Use:
1. Steep 5-10 grams of dried leaves in 250 ml of hot water for 15 minutes.
2. Strain and drink warm. Use only under professional guidance and seek medical attention if fever persists.
Antidysenteric Leaf Juice Remedy
Purpose: For dysentery and gastrointestinal infections.
Preparation & Use:
1. Extract fresh juice from clean Capparis zeylanica leaves.
2. Mix 10-15 ml of leaf juice with a pinch of black pepper powder.
3. Consume once or twice daily until symptoms subside.
---
7. In-Depth Phytochemical Profile and Clinical Significance of Capparis zeylanica (Vyaghranakhi)
Introduction
Capparis zeylanica, known in Ayurveda as Vyaghranakhi, is a medicinal shrub of profound therapeutic depth, classified as a Rasayana for its rejuvenative and immunomodulatory properties. Widely distributed across South Asia, every part of this plant roots, bark, leaves, flowers, and fruits has been harnessed in traditional medicine to treat a remarkable spectrum of conditions, from diabetes and inflammation to seizures and dysentery. In the modern era, rigorous scientific investigation has transformed it from a folk remedy into a plant of significant pharmacological interest. The discovery of its unique acetylenic fatty acid, the identification of γ-sitosterol as a key bioactive compound in its flowers, and the elucidation of its multi-target antioxidant mechanisms through network pharmacology represent major breakthroughs. A landmark 2025 study not only quantified the antioxidant activity of the flower extract but also mapped its interaction with ten core oxidative stress-related proteins, providing a molecular framework for centuries of traditional use. Concurrent research has confirmed its superior antihyperglycemic effects compared to related Capparis species, positioning C. zeylanica as a leading candidate for botanical diabetes therapy.
1. γ-Sitosterol and Flower Phytochemistry (The Signature Antioxidant and Multi-target Compound)
Key Compounds: γ-sitosterol, β-sitosterol, phenols, sterols.
Quantitative Profile (2025 Study): The methanolic flower extract demonstrated concentration-dependent antioxidant activity with the following IC50 values: nitric oxide radical scavenging at 324.08 µg/mL, hydroxyl radical scavenging at 384.44 µg/mL, DPPH radical scavenging at 506.02 µg/mL, ABTS radical scavenging at 687.49 µg/mL, and FRAP at 745.79 µg/mL. These results indicate moderate antioxidant activity compared to standard ascorbic acid.
Actions and Clinical Relevance:
· Antioxidant (Multi-target Mechanism Validated): The 2025 study represents the first comprehensive investigation of C. zeylanica flowers. GC-MS analysis identified 10 major compounds, with γ-sitosterol as the key bioactive contributor. Network pharmacology analysis predicted multiple oxidative stress-related targets for the extract, including CASP3 (Caspase-3), ESR1 (Estrogen Receptor 1), VEGFA (Vascular Endothelial Growth Factor A), MAPK8 (Mitogen-Activated Protein Kinase 8), HSP90AA1 (Heat Shock Protein 90 Alpha Family Class A Member 1), EGFR (Epidermal Growth Factor Receptor), AKT1 (AKT Serine/Threonine Kinase 1), STAT3 (Signal Transducer and Activator of Transcription 3), PTGS2 (Prostaglandin-Endoperoxide Synthase 2/COX-2), and SRC (Proto-oncogene tyrosine-protein kinase Src).
· Molecular Docking and Dynamics Validation: Molecular docking and dynamics simulations confirmed strong and stable interactions between γ-sitosterol and these ten target proteins. This multi-target approach explains how the flower extract exerts its antioxidant effects not through a single mechanism but through a sophisticated network of protein interactions.
· Significance: This study provides a mechanistic basis for the therapeutic potential of C. zeylanica flowers in oxidative stress-related diseases, including cancer, cardiovascular disease, neurodegenerative disorders, and diabetes. The modulation of CASP3 suggests anti-apoptotic effects, while PTGS2 (COX-2) inhibition indicates anti-inflammatory mechanisms. The involvement of AKT1 and MAPK8 points to cell survival and stress response pathway regulation.
2. Unique Fatty Acid: The Root-Specific Bioactive
Key Compound: E-Octadec-7-en-5-ynoic acid.
Actions and Clinical Relevance:
· Safety Profile: This unique acetylenic fatty acid isolated from the roots has been reported to be safe for consumption in Evan rats, supporting the traditional use of root preparations.
· Antimicrobial and Anticancer Potential: Acetylenic fatty acids are known for their biological activities, including antimicrobial and cytotoxic properties, though specific studies on this compound are ongoing.
3. Flavonoids and Phenolic Compounds (The Anti-inflammatory and Antimicrobial Matrix)
Key Compounds: Kaempferol, Quercetin, Vanillic acid, Ferulic acid, p-Coumaric acid.
Actions and Clinical Relevance:
· Antimicrobial Activity (Dose-Dependent and Potent): A 2019 study evaluating leaf extracts against five pathogenic bacteria and five fungal organisms demonstrated that the methanol extract exhibited the highest antibacterial activity against Staphylococcus aureus with an inhibition zone of 24.66±0.28 mm at 100 µL. The highest antifungal activity was recorded against Aspergillus niger with a zone of inhibition of 14.50±0.50 mm at 100 µL. All extracts showed dose-dependent antimicrobial activity, with the ethyl acetate fraction showing the highest activity among fractions. The ethyl acetate fraction led to the isolation and characterization of β-sitosterol, α-amyrin, and kaempferol.
· Anti-inflammatory: The presence of kaempferol, quercetin, and other flavonoids provides potent anti-inflammatory effects through inhibition of pro-inflammatory enzymes and mediators.
· Antioxidant: Phenolic acids and flavonoids work synergistically to scavenge free radicals and protect cellular components from oxidative damage.
4. Alkaloids and Terpenoids (The Analgesic, Antipyretic, and Sedative Arm)
Key Compounds: Various alkaloids (yet to be fully characterized), α-amyrin, β-sitosterol.
Actions and Clinical Relevance:
· Analgesic and Antipyretic (Clinically Validated): Ethanol and water extracts of C. zeylanica leaves showed dose-dependent and significant increases in pain threshold in the tail-immersion test, confirming analgesic effects. Antipyretic activity was also demonstrated, supporting traditional use in fever management.
· Sedative and Anticonvulsant: The traditional use of roots for convulsive seizures is supported by the presence of alkaloids with sedative properties, though specific mechanistic studies are warranted.
5. Antidiabetic Activity (Validated In Vivo and Clinically Significant)
Key Studies:
· 2025 Comparative Study: A study published in the Arabian Journal of Medicinal and Aromatic Plants compared the anti-diabetic properties of C. grandis, C. rotundifolia, and C. zeylanica in STZ-induced diabetic Wistar rats. All extracts showed significant antihyperglycemic effects, with C. zeylanica outperforming both C. grandis and C. rotundifolia. The findings showed increased body weight and decreased blood glucose levels.
· 2015 Insulin Secretagogue Study: Oral administration of C. zeylanica methanolic extract for 28 days showed a significant reduction in blood glucose levels and enhanced circulating insulin levels in STZ-induced diabetic rats. The fruit extract demonstrated insulin secretagogue activity, indicating that C. zeylanica fruits have potential for use in diabetes therapy.
Mechanisms: The antidiabetic effects are attributed to multiple mechanisms including insulin secretagogue activity (stimulating insulin release from pancreatic beta cells), improved insulin sensitivity, antioxidant protection of pancreatic tissue, and potential alpha-glucosidase inhibition.
6. Immunostimulant Activity (Validated Rasayana Property)
Key Study (2006): Oral administration of ethanolic and water extracts of C. zeylanica leaves at doses of 150 and 300 mg/kg in mice dose-dependently potentiated the delayed-type hypersensitivity reaction induced by sheep red blood cells.
Actions and Clinical Relevance:
· Cellular Immunity Enhancement: The potentiation of DTH response indicates enhancement of cell-mediated immunity, validating the plant's traditional classification as a Rasayana for immune disorders.
· Macrophage Activation: The immunostimulant effects likely involve activation of macrophages and other immune effector cells.
An Integrated View of Healing in Capparis zeylanica
· For Diabetes and Metabolic Syndrome: C. zeylanica offers a comprehensive multi-mechanistic approach to diabetes management. The fruits directly stimulate insulin secretion from pancreatic beta cells, addressing the hormonal deficiency central to type 2 diabetes. The antioxidant compounds, particularly γ-sitosterol from the flowers, protect pancreatic tissue from oxidative damage, preserving beta cell function. The 2025 comparative study confirming its superiority over related Capparis species adds weight to its traditional use. The simultaneous reduction in blood glucose and improvement in body weight in diabetic models indicates broader metabolic benefits beyond glycemic control.
· For Oxidative Stress and Chronic Disease Prevention: The 2025 network pharmacology study represents a paradigm shift in understanding how C. zeylanica exerts its therapeutic effects. By mapping the interaction of γ-sitosterol with ten key oxidative stress-related proteins, researchers have demonstrated that the plant's benefits arise not from a single compound acting on a single target, but from a sophisticated network of multi-target interactions. The modulation of CASP3, AKT1, MAPK8, STAT3, and PTGS2 simultaneously provides a coordinated defense against oxidative damage, inflammation, and cell death. This multi-target approach is characteristic of the most effective herbal medicines and explains the plant's broad therapeutic applications.
· For Inflammatory and Infectious Conditions: The anti-inflammatory action operates through multiple pathways. Topically, the leaf paste provides direct relief through astringent tannins and anti-inflammatory flavonoids. Systemically, the immunomodulatory polysaccharides and alkaloids work to normalize immune function. Against infections, the broad-spectrum antimicrobial activity of leaf extracts, particularly against S. aureus and A. niger, validates traditional use in skin infections, dysentery, and wound healing.
· For Immune Enhancement (Rasayana Action): As a classified Rasayana drug, C. zeylanica enhances cellular immunity through potentiation of delayed-type hypersensitivity responses. This effect is particularly valuable in immune-compromised states, during convalescence from illness, and as a preventive measure against recurrent infections.
Toxicological Profile and Quality Control
Safety Data: The unique fatty acid E-Octadec-7-en-5-ynoic acid isolated from the roots has been reported to be safe for consumption in Evan rats. Heavy metal analysis of the drug material showed arsenic and heavy metal levels within permissible limits, proving the safety of the drug material.
Standardization Parameters: Physico-chemical parameters established for the leaves include moisture content, total ash, acid insoluble ash, water soluble ash, water soluble extractives, alcohol soluble extractives, pH of water extract, volatile oil, and fiber content. HPTLC and TLC studies have been carried out to establish chromatographic fingerprints. Fluorescence characters of the drug in different solvents have been detected in visible, short UV, and long UV light.
Precautions: While generally safe in traditional usage patterns, therapeutic use should be under professional guidance. Pregnant and breastfeeding women should avoid use due to lack of safety data.
Conclusion: Capparis zeylanica has undergone a remarkable transformation from a traditional Rasayana herb to a plant at the cutting edge of pharmacological research. The 2025 discovery of γ-sitosterol's multi-target interactions with ten oxidative stress-related proteins provides a molecular framework for centuries of traditional use. The validation of its superior antihyperglycemic effects compared to related species, the quantification of its antioxidant activity across five different assays, the isolation of a unique acetylenic fatty acid, and the confirmation of its immunostimulant properties collectively position C. zeylanica as a plant of significant therapeutic potential. It stands as a bridge between ancient Ayurvedic wisdom and modern evidence-based medicine, offering validated applications in diabetes, inflammation, immune disorders, and oxidative stress-related diseases. The identification of its specific bioactive compounds and their molecular targets opens avenues for the development of standardized phytomedicines and novel drug leads.
---
Disclaimer:
Capparis zeylanica has been used safely in traditional medicine for centuries, and modern quality control studies have confirmed heavy metal levels within permissible limits. However, pregnant and breastfeeding women should avoid use due to lack of comprehensive safety data. Individuals with diabetes should use under professional supervision, as the insulin secretagogue effects may interact with antidiabetic medications and cause hypoglycemia. Therapeutic doses should be determined by a qualified practitioner. Always consult a qualified healthcare professional before using this herb for medicinal purposes. This information is for educational use only and is not a substitute for professional medical advice.
---
8. Reference Books, Books for In-depth Study:
· Indian Medicinal Plants: An Illustrated Dictionary by C.P. Khare
· The Ayurvedic Pharmacopoeia of India (Relevant Volumes)
· Dravyaguna Vijnana by Dr. J.L.N. Sastry
· Wealth of India: Raw Materials (CSIR publication)
· Quality Standards of Indian Medicinal Plants (Indian Council of Medical Research)
---
9. Further Study: Plants That Might Interest You Due to Similar Medicinal Properties
1. Capparis spinosa (Caper Bush)
· Species: Capparis spinosa | Family: Capparaceae
· Similarities: A close relative with similar antioxidant, anti-inflammatory, and hepatoprotective properties. The flower buds are the culinary capers, and the plant has been extensively studied for its antidiabetic and antihypertensive effects.
2. Tinospora cordifolia (Guduchi)
· Species: Tinospora cordifolia | Family: Menispermaceae
· Similarities: Both are premier Rasayana herbs in Ayurveda, known for their immunomodulatory, hepatoprotective, and antipyretic properties. While Guduchi is more renowned for its overall rejuvenative effects on all tissues, C. zeylanica is more specific for diabetes and inflammatory conditions.
3. Gymnema sylvestre (Gurmar)
· Species: Gymnema sylvestre | Family: Apocynaceae
· Similarities: Both plants are well-known antidiabetic agents in Ayurveda, used to reduce blood sugar levels. Gurmar is more famous for its sugar taste-suppressing and pancreatic regenerating properties, while C. zeylanica offers additional immunomodulatory and anti-inflammatory benefits.
4. Andrographis paniculata (Kalmegh)
· Species: Andrographis paniculata | Family: Acanthaceae
· Similarities: Both are bitter Rasayana herbs with potent immunomodulatory, hepatoprotective, and antipyretic properties. Kalmegh is more renowned for its liver-specific actions and its use in infectious diseases, while C. zeylanica offers stronger antidiabetic and analgesic effects.
-x-x-x-End-x-x-x-
Comments