Abstract
Oxalis corniculata Linn., a member of the family Oxalidaceae, is a medicinal creeping herb widely distributed in tropical and subtropical regions. It is commonly known as creeping wood sorrel, and it grows abundantly in human-inhabited areas, gardens, roadsides, and warmer parts of India, including the Himalayan region up to about 2500 m altitude. The plant has a characteristic sour taste due to the presence of organic acids such as oxalic, ascorbic, citric, tartaric acids, along with essential fatty acids, including palmitic, oleic, linoleic, linolenic, and stearic acids. Traditionally, it has been used in various systems of medicine for managing ailments like diarrhoea, dysentery, piles, skin disorders, and imbalances of kapha and vata. Its growth is influenced by soil and climatic conditions, and it commonly thrives in moist, shaded environments. The plant is recognised for its diverse phytochemical composition and its potential health-promoting properties.
Classical References Of Oxalis Corniculata Linn./ Indian Sorrel/ Changeri
- Bhavprakash Nighantu Shaaka varga
- Raj Nighantu Mulakadi, Parpatadi, Guduchyadi varga

Scientific Classification Of Oxalis Corniculata Linn./ Indian Sorrel/ Changeri
- Kingdom: Plantae
- Division: Magnoliophyta
- Class: Magnoliopsida
- Order: Oxalidales
- Family: Oxalidaceae
- Genus: Oxalis
- Species: corniculata
- Botanical Name: Oxalis corniculata Linn.
Synonym Of Oxalis Corniculata Linn./ Indian Sorrel/ Changeri
1. Kshudra Amlika
Means small sour plant; refers to its small size and acidic taste.
2. Lonika
Denotes a plant with a characteristic sour or salty taste.
3. Amlalonika
Indicates a strongly sour-tasting herb due to acidic constituents.
4. Lola
Suggests spreading or creeping growth habit of the plant.
5. Chatushparni
Means four-leafed; refers to its compound leaf appearance.
6. Dantasatha
Indicates it may cause a tingling sensation in the teeth because of sourness.
7. Amlapatrika
Means sour leaves; highlights the acidic taste of the foliage.
8. Sunishannachada
Leaves resemble those of the Sunishannaka plant.
9. Chukrika
Refers to a sour-tasting herb, often associated with tangy leaves.
10. Ashmantaka
Suggests a hardy plant that can grow even in stony or rough places.
11. Shafari
Indicates a delicate, spreading herb with small leaves.
12. Kushli
Implies a soft, creeping plant commonly found in moist habitats.
Vernacular Names Of Oxalis Corniculata Linn./ Indian Sorrel/ Changeri
- English Names: Indian Sorrel, Yellow Wood Sorrel, Creeping Wood Sorrel, Creeping Oxalis, Creeping Lady’s Sorrel, Procumbent Yellow Sorrel
- Hindi Names: Teen Pattia, Amrul, Changeri
- Tamil Name: Paliakiri
- Bengali Name: Amrul
- Gujarati Names: Ambolee, Changeri
- Kannada Names: Pullamouradi, Sivargee
- Malayalam Name: Pulliparel
- Marathi Names: Ambutee, Ambatee
- Telugu Name: Pulichinta
- Urdu Names: Teen Patiya, Changeri
- Arabic Name: Hhamdid
- French Names: Alleluia, Oxalis corniculée
- German Names: Gelber Sauerklee, Gehornter Sauerklee
- Italian Name: Ossalide corniculata
- Nepalese Name: Caremalaa
- Portuguese Names: Azedinha, Erva-azedo
- Spanish Names: Acederilla, Vinagrera
- Turkish Name: Eksi Yonca
- Brazilian Name: Trevo-azedo
- Chinese Name: Cu-jiang-cao
- Fiji Name: Matakonikoni
- Philippines Names: Salamagi, Kanapa
- Swedish Name: Krpoxalis
Habitat Of Oxalis Corniculata Linn./ Indian Sorrel/ Changeri
Oxalis corniculata Linn. is a low-growing, delicate herbaceous medicinal plant widely distributed in gardens, parks, roadsides, yards, and other human-inhabited areas. It commonly occurs throughout the warmer regions of India and extends into the Himalayan areas up to about 2500 m altitude. The plant is also widely found across tropical and temperate regions, including the West Indies, and North, Central, and South America. It is particularly common in Florida and other parts of the United States, including eastern seaport towns, Ontario, and Texas. Due to its extensive distribution, it is often regarded as a cosmopolitan weed of the Old World as well.
Morphology Of Oxalis Corniculata Linn./ Indian Sorrel/ Changeri
Oxalis corniculata is a small herbaceous plant with a bushy, mat-forming growth habit, often spreading along the ground. The upper parts of the plant are weakly erect, smooth to slightly hairy, with branching stems that root at the nodes. Leaves are trifoliate, thin, and heart-shaped with a characteristic apical notch, arranged alternately along the stem and showing reticulate venation. The stem is slender, slightly hairy, usually with internodes about 5–9 cm long, and has a sour taste with a mild acidic odour. The roots are thin, dark brown, branched, soft, and generally odourless. Flowers are small, about 6–12 mm wide, with five yellow petals. The fruits are cylindrical, pointed capsules about 1–1.5 cm long, containing oval, flattened, light-brown seeds with a distinctly ridged surface. The plant also produces stolons that aid in its spreading growth.
Classical Categorisation Of Oxalis Corniculata Linn./ Indian Sorrel/ Changeri
- According to Charaka Samhita: Shaaka Varga
- According to Sushrut Samhita: Shaaka Varga
- According to Vagbhata: Shaaka Varga
- According to Dhanwantari Nighantu: Amradi Varga
- According to Bhavprakash Nighantu: Shaaka varga
- According to Raj Nighantu: Mulakadi, Parpatadi, Guduchyadi varga
Ancient Verse Of Oxalis Corniculata Linn./ Indian Sorrel/ Changeri
चाङ्गेरी चुक्रिका दन्तशठाम्बष्ठाऽम्ललोणिका ।
अश्मन्त्तकस्तु शफरी कुशली चाम्लपत्रकः ॥
चाङ्गेरी दीपनी रुच्या रूक्षोष्णा कफवातनुत् ।
पित्तलाऽम्ला ग्रहण्यर्शः कुष्ठातीसारनाशिनी ॥
(Bhavprakash Nighantu Shaaka varga 23-24)
According to the above shloka, the Sanskrit names of Tinpatiya include Changeri, Chukrika, Dantashatha, Ambastha, Amlalonika, Ashmantaka, Shafari, Kushali, and Amlapatraka. Changeri is described as having a sour taste, stimulating digestion, improving appetite, and possessing dry and heating qualities. It is considered capable of increasing pitta while helping alleviate kapha and vata disorders, and is traditionally used in conditions such as grahani (digestive disorders), piles, skin diseases, and diarrhoea.
क्षुद्राम्ली च रसे साम्ला सोष्णा सा वह्निवर्द्धनी ।
रुचिकृग्रहणीदोष-दुर्नामघ्नी कफापहा ।।
(Raj Nighantu Parpatadi varga 102)
According to the above shloka, it possesses a sour taste (Amla rasa) and hot potency (Ushna virya), which help stimulate appetite and improve digestion. It is beneficial in conditions like chronic colitis, sprue, and piles, and is known to help reduce Kapha disorders.
चांगेरीशाकमत्युष्णं कटु रोचनपाचनम् ।
दीपनं कफवातार्शः संग्रहण्यतिसारजित् ।।
(Raj Nighantu Mulkadi varga 148)
Changeri Shaka is very hot in potency, pungent, appetising, and digestive in nature. It supports the digestive process and is helpful in managing Kapha and Vata disorders, piles, chronic colitis Sangrahani), and diarrhoea.
क्षुद्राम्लिका तु चाङ्गेरी लोणिका चाम्ललोणिका।
लोला लोणा चतुष्पर्णी सैव दन्तशड़ा मता ॥
चाङ्गेरी कफवातघ्नी ग्राहिण्युष्णा च पित्तकृत् ।
ग्रहणण्यर्शोविकारघ्नी सामवाते कफे हिता ॥
(Dhanwantari Nighantu Amradi varga 30-31)
According to the above shloka, the plant known by synonyms such as Changeri, Lonika, Amlalonika, Lola, Lona, Catushaparni, and Dantashatha is characterised by a hot potency and styptic action. It helps balance Vata and Kapha doshas while slightly increasing Pitta. Traditionally, it is valued for improving digestive function and is used in conditions like malabsorption syndrome, haemorrhoids, and certain rheumatic disorders.
Ayurvedic Properties Of Oxalis Corniculata Linn./ Indian Sorrel/ Changeri
- Taste (Rasa)- Sour (Amla)
- Physical property (Guna) - Dry (Ruksha)
- Potency (Veerya )- Hot Potency (Usna)
- Effect on tridosha– Balance Vata and Kapha dosha
Therapeutic Indications Of Oxalis Corniculata Linn./ Indian Sorrel/ Changeri
- Kapha-Marute Hita – Beneficial in Kapha and Vata disorders.
- Grahani – Helpful in malabsorption conditions and digestive weakness.
- Arsha – Traditionally useful in haemorrhoids.
- Kinchit Kashaya – Slightly astringent in nature.
- Agnideepani – Enhances digestive fire and appetite.
- Pittakrut – Tends to increase Pitta.
- Saamavate Hita – Beneficial in conditions like rheumatoid arthritis.
- Kaphe Hita – Supports the management of Kapha-related disorders.
- Laghu – Light and easy to digest.
- Atisara Hanti – Useful in managing diarrhoea.
- Kushtanashani – Traditionally beneficial in skin diseases.
Systemic Actions Of Oxalis Corniculata Linn./ Indian Sorrel/ Changeri
- External Uses– Possesses analgesic and anti-inflammatory properties; shows a scraping action on tissues and is traditionally used in headache, inflammatory wounds, and certain eye conditions such as pterygium and scleral inflammation.
- Internal Uses–
- Nervous System – Its juice is traditionally used in intoxication to help restore consciousness.
- Digestive System – Absorbent, carminative, digestive, and liver-stimulating; indicated in anorexia, loss of appetite, malabsorption syndrome, haemorrhoids, and rectal prolapse.
- Circulatory System – Provides cardioprotective and styptic effects; useful in bleeding disorders due to its astringent nature.
- Satmikarana – Considered to have anti-poisonous properties and traditionally used in cases of datura poisoning.
- Tapakrama – Cooling in nature, helps relieve burning sensations and is indicated in certain recurrent fevers such as chaturthaka jvara (recurrent quartan-type fevers).
Chemical Composition Of Oxalis Corniculata Linn./ Indian Sorrel/ Changeri
- Contains secondary metabolites such as alkaloids, glycosides, flavonoids, tannins, polyphenols, steroids, volatile oils, and carbohydrates.
- Rich in essential fatty acids, including palmitic, oleic, linoleic, linolenic, and stearic acids.
- Leaves contain phenolic acids like p-hydroxybenzoic, vanillic, syringic, caffeic, and p-coumaric acids.
- Organic acids present include oxalic, tartaric, citric, and malic acids, responsible for its sour taste.
- Flavonoids such as apigenin, quercetin, vitexin, isovitexin, orientin, and luteolin derivatives are abundant.
- Contains phytosterols, including β-sitosterol and triterpenoids like betulin.
- Methanolic extracts show proteins, amino acids, fiber, calcium, carbohydrates, and volatile oils.
- Nutritional minerals include calcium, iron, phosphorus, sodium, potassium, nitrogen, and magnesium.
- Leaves are rich in Vitamin C, carotene, crude lipids, and moisture content.
- The plant is a good source of antioxidants due to polyphenols and flavonoids.
- Essential oils and aromatic compounds contribute to medicinal properties and characteristic odour.
Actions And Properties Of Various Chemical Constituents Of Oxalis Corniculata Linn./ Indian Sorrel/ Changeri
1. For Piles
The management of piles (haemorrhoids) with Oxalis corniculata (creeping wood sorrel) is mainly due to its rich phytochemical content that provides anti-inflammatory, astringent, antioxidant, and healing effects. Flavonoids such as vitexin, isovitexin, quercetin, and apigenin help strengthen blood vessels, improve venous tone, and reduce inflammation and congestion in hemorrhoidal tissues. Tannins exert an astringent and styptic effect, helping to shrink swollen tissues and control bleeding. Phenolic compounds and polyphenols reduce oxidative stress, thereby easing irritation and inflammation. Essential fatty acids support tissue repair and overall healing, while organic acids like tartaric, citric, and malic acids aid digestion and indirectly help relieve hemorrhoidal symptoms. Together, these actions reduce swelling, stop bleeding, promote healing, and provide symptomatic relief in piles.
2. For Diabetes
The antidiabetic effects of Oxalis corniculata (creeping wood sorrel) are largely due to its rich phytochemical profile, including flavonoids, phenolic compounds, alkaloids, and acidic polysaccharides. Flavonoids like isovitexin and vitexin-2″-O-D-glucopyranoside provide antioxidant, anti-inflammatory, and blood sugar-lowering effects, while phenolic acids and tannins protect pancreatic cells from oxidative damage. The novel triazole alkaloid Aspergillus triazolate A inhibits β-glucosidase, reducing carbohydrate breakdown and absorption, and acidic polysaccharides further decrease oxidative stress. Organic acids such as citric and tartaric acids contribute to metabolic regulation. Overall, the plant helps lower blood glucose by inhibiting digestive enzymes, enhancing antioxidant defences via the Nrf2/HO-1 pathway, and potentially supporting pancreatic cell regeneration, thereby managing hyperglycemia and diabetic complications effectively.
3. Anti-Epileptic Activity
The anti-epileptic effects of Oxalis corniculata (creeping wood sorrel) are primarily attributed to its rich flavonoid content, particularly vitexin and isovitexin, which help elevate Gamma-aminobutyric acid (GABA) levels in the brain. Studies show that methanolic extracts of the plant (MEOC) increase inhibitory neurotransmitters like GABA and monoamines such as dopamine, serotonin, and noradrenaline, helping stabilise neuronal activity. In seizure models like Maximal Electroshock (MES) and Pentylenetetrazole (PTZ), MEOC significantly reduces convulsion duration, demonstrating anticonvulsant activity. The plant’s antioxidant compounds further support neuroprotection by reducing oxidative stress and modulating GABAergic transmission. Additional components, including essential fatty acids, phenolic acids, and minerals like calcium and magnesium, enhance its neuroprotective and anticonvulsant effects, collectively reducing neuronal excitability and seizures.
4. For Chronic Colitis
The management of chronic colitis with Oxalis corniculata is largely due to its potent anti-inflammatory and antioxidant phytochemicals, including flavonoids (quercetin, kaempferol, isovitexin, vitexin-2″-O-β-D-glucopyranoside), phenolic acids like caffeic acid, and acidic polysaccharides such as OCP-3. Flavonoids inhibit NF-κB activation, reducing pro-inflammatory cytokines and enzymes like COX-2 and iNOS, while acidic polysaccharides and phenolic acids protect colonic tissues from oxidative damage. Glycosyl flavones in the leaves further enhance antioxidant and anti-inflammatory effects, alleviating intestinal inflammation. Essential fatty acids and tannins contribute to overall metabolic regulation and tissue healing. Experimental studies show that the plant extract lowers malondialdehyde (MDA) levels, restores antioxidant enzymes like catalase and superoxide dismutase, and significantly reduces colonic damage, collectively helping to manage chronic colitis effectively.
Practical Uses / Health Benefits Of Oxalis Corniculata Linn./ Indian Sorrel/ Changeri
- Apply leaf paste on snake bites as an antidote.
- Use leaf paste or juice to counteract poisoning from datura seeds, mercury, or arsenic.
- Apply leaf paste on burns and insect bites for healing.
- Mix leaf juice with onion extract to remove warts and corns.
- Crush leaves to reduce inflammation and swelling.
- Use leaf juice as eye drops to relieve irritation and conjunctivitis.
- Infuse leaves to reduce the opacity of the cornea and soothe itching eyelids.
- Boil plant parts with buttermilk to aid digestion and treat diarrhoea.
- Use as an appetiser to help with dyspepsia, piles, and anaemia.
- Drink leaf juice to support liver function and treat jaundice.
- Infuse leaves to reduce low-grade and high-grade fevers.
- Apply leaf paste on the forehead to relieve headaches.
- Mix leaf extract with oil and massage to help relieve insomnia.
- Use whole plant parts as a remedy for scurvy.
Parts Used Of Oxalis Corniculata Linn./ Indian Sorrel/ Changeri
- Whole plant
Dosage Of Oxalis Corniculata Linn./ Indian Sorrel/ Changeri
- Powder- 3-6 gms
- Juice- 10-20 ml
Classical Products Of Oxalis Corniculata Linn./ Indian Sorrel/ Changeri
- Kukutandrwak Bhasma
- Changeryadi Ghritam
Planet Ayurveda Products With Oxalis Corniculata Linn./ Indian Sorrel/ Changeri
Conclusion
Oxalis corniculata Linn., commonly known as Indian Sorrel or Changeri, is a versatile medicinal herb with a wide range of therapeutic uses. It is traditionally employed in Ayurvedic and folk medicine, and its leaves, juice, and whole plant are used to treat snake bites, poisoning, skin disorders, eye problems, digestive issues, liver ailments, fever, headaches, and insomnia. It is rich in bioactive compounds. This plant exhibits anti-inflammatory, hepatoprotective, antimicrobial, and antioxidant properties. Its easy availability and diverse ethno-medicinal applications make it an important natural remedy for promoting general health and managing various ailments.
Frequently Asked Questions (FAQ’s)
1. What Is The Common Name Of Oxalis Corniculata?
The common name is Indian Sorrel or Changeri.
2. What Are The Medicinal Uses Of Oxalis Corniculata?
It is used for snake bites, poisoning, skin disorders, eye problems, digestive issues, liver ailments, fever, headaches, and insomnia.
3. What Is The Family Name Of Oxalis Corniculata?
The family name is Oxalidaceae.
4. What Is The Scientific Name Of Changeri?
The scientific name is Oxalis corniculata Linn.


