Kamala

Other Names

Aconceveibum trinerveCha tri khaoCopianthus indicusCroton cascavilloidesCroton coccineusCroton distansCroton laurifoliusCroton montanusCroton philippenseCroton philippensisCroton punctatusDarandangDyer's rottleraEchinus philippensisEchinus philippinensisEuonymus hypoglaucusEuonymus hypoleucusGangaiGlandulae RotteleraeKamala dye treeKamala treeKamalagundiKambalKambhalKamcelaKameelaKamelaKampillaKampillakaKampilyakaKankuKapilaKapiloKapliKarkashaKham daengKham saetKhi nueaKiz munKumilaKumkum treeKunkumadamaraKuramaddakuKuramatakkuMacaranga strictaMallotus bicarpellatusMallotus philippensisMallotus philippensis subsp. reticulatusMallotus philippensis subsp. tomentosusMallotus philippensis var. microphyllusMallotus philippensis var. reticulatusMallotus philippensis var. tomentosusMallotus philippinensisMallotus reticulatusManjanampottuMappa strictaMonkey face treeOrange kamalaPawn awnPonnagamRaktangaRaktaphalaRanjakaRechanakaRechaniRechiRed kamalaRochanaRohiniRottleraRottlera affinisRottlera aurantiacaRottlera philippensisRottlera philippinensisRottlera tinctoriaRottlera tinctoria Roxb.Rottlera tinctoria var. monstruosaRum naoSenduriShendriShindurSindooramSindurSpoonwoodTanarius strictusWurrus

Synopsis

Kamala (Mallotus philippensis): A Comprehensive Reference

1. Identity and Botanical Description

Scientific Classification and Nomenclature

Kamala, known scientifically as Mallotus philippensis, is a small to medium-sized evergreen tree in the spurge family Euphorbiaceae, reaching heights of up to 25 meters with a short, fluted bole up to 50 cm in diameter. The accepted binomial authority is Mallotus philippensis (Lam.) Müll. Arg., meaning it was originally described by Lamarck and later revised by Mueller-Argoviensis. A widely encountered orthographic variant in scientific literature is Mallotus philippinensis (with an extra "in"), and both spellings appear across peer-reviewed sources.

Older synonyms include Rottlera tinctoria Roxb. and Echinus philippensis (Lam.) Baill., reflecting its historical placement in different genera. It is commonly known as the kamala tree or kumkum tree, or red kamala, and belongs to the family Euphorbiaceae, distributed in both tropical and subtropical regions of the old world, with the genus comprising approximately 150 species of medium-sized perennial shrub or small dioecious tree.

It must be distinguished from "kamala" meaning "lotus" in many Indian languages — an unrelated plant, flower, and sometimes metonymic spiritual or artistic concept. The medicinal "Kamala" discussed here refers exclusively to the reddish powder and preparations derived from M. philippensis.

Common Names Across Languages

The plant is known under many regional names: in Hindi as Kabila; in English as Kamala or Monkey Face Tree; in Arabic as Kambil; in Assamese as Lokhan; in Gujarati as Kamilo; in Kannada as Kunkundamar or Chandranettu or Kapila; in Kashmiri as Kammelak; in Malayalam as Kurmadakku or Kampippala; in Marathi as Shendari or Kapila; in Tamil as Kungumam; in Telugu as Kunkum; and in Urdu as Kamila.

Morphology

Kampillaka is a medium-sized tree growing to a height of 20–25 meters, found all over India up to an altitude of 5,000 feet. The bark is brown outside and reddish inside. The leaves are 3–5 inches long, somewhat rounded to elongated in shape, with hair-like structures on the lower surface, while the upper surface is smooth. The species produces unisexual flowers and distinctive fruits covered in reddish glandular hairs that yield kamala powder, a traditional source of yellow-orange dye for textiles and a key medicinal product.

Geographical Distribution

Native to tropical and subtropical regions of East Asia, including India, China, Myanmar, Thailand, the Philippines, Indonesia, and extending to Australia and the Solomon Islands, it thrives in evergreen forests, secondary scrub, and open rocky areas from sea level to 1,600 meters elevation. The kamala often appears in rainforest margins or in disturbed areas free from fire, in moderate to high rainfall areas. It occurs in South Asia, Southeast Asia, as well as Afghanistan and Australia. The southernmost limit of natural distribution is Mount Keira, south of Sydney.

The Medicinal Part: Kamala Powder

The glandular hairs that cover the ripe fruits contain a pigment that is the source of kamala powder or kamala dye, which is used for dyeing wool and silk bright orange. The dye is insoluble in cold water and slightly soluble in boiling water, but it is freely soluble and forms deep red solutions in alcohol, ether, and alkalis. The principal colouring substances are rottlerin (C₃₀H₂₈O₈), crystallizing in salmon-coloured needles or plates, and its yellow isomer isorottlerin, which together constitute about 11% of the weight of the kamala powder of ripe fruits.

Kamala powder, which is insoluble in cold water but soluble in alcohol and boiling water, has been applied to color silk and wool textiles, as well as traditional fabrics in regions like Bhutan. The red powder is brushed off and collected when the fruit is ripe.

Common Preparations and Forms

The primary medicinal material is the dried reddish powder obtained by collecting and sifting the glandular hairs from the surface of ripe fruits. In Ayurvedic and Unani medicine, the plant's fruit glands and hairs are employed as an anthelmintic to expel tapeworms and other intestinal parasites, often administered in doses of 1–2 grams mixed with milk or curd to enhance efficacy. Other preparations reported in the literature include:

Decoctions of bark or leaves (typically 30–50 ml) used topically for skin conditions.
Powders of the fruit glands administered orally, often mixed with honey, milk, or curd.
Topical pastes applied externally for parasitic skin diseases, wounds, and ulcers.
Methanolic, ethanolic, aqueous, and ethyl acetate extracts, used in laboratory and preclinical research settings.

Beyond its medicinal value, Mallotus philippensis possesses significant economic and industrial importance. The red pigment from kamala serves as a sustainable and eco-friendly alternative to synthetic dyes for textiles such as silk and wool. The primary coloring agents are rottlerin and its derivatives.

2. Traditional and Historical Use

Ayurvedic Tradition

Mallotus philippensis (Lam.) Müll. Arg., family Euphorbiaceae, is one of the medicinal plants highlighted for its uses in almost all classical texts of Ayurveda, and is also traditionally used by local traditional healers for various disease conditions. The plant has a well-documented lineage in ancient Indian texts. The earliest mention appears in the 1st-century CE medical compendium, the Sushruta Samhita, where it is praised as "Kamalā," the crimson cloak. Over centuries, Ayurvedic scholars like Charaka and Chakrapani praised its anthelmintic and external applications for skin disorders.

Kampillaka is one of the best drugs mentioned in Ayurveda for worm infestation (Krimighana). As per Ayurvedic classical texts, Kampillaka is Katu (pungent) in Rasa and Ushna Virya (hot potency). It reduces Kapha, Pitta, and Rakta diseases, destroys worms, and pacifies intestinal tumors, abdominal diseases, and wounds or ulcers. It is a mild purgative, pungent in taste, and heat-generating, and brings relief from urinary diseases, abdominal distension, poisonous effects, and urinary calculi.

Kampilu is regarded as a very strong laxative (virechaka) and is considered an effective remedy for intestinal worms. In children, it is used to treat worm infestation. Though it is a drug of herbal origin, it has been categorized as one among eight Sadharana rasa in Rasa-shastra (the Ayurvedic study of minerals and metals). M. philippinensis is included in the Virecana ghana (purgative group) of Ayurvedic medicine.

According to the Bhavprakash Nighantu, kampil, karkash, chander, raktang, and rochan are various synonyms of Mallotus philippensis.

Unani Medicine

Kamala is also an officially listed ingredient in the Unani system. Alternatively called Kampillakah, Kamala is commonly used as an orally administered medicinal substance. This botanical specimen has a longstanding application history due to its anthelmintic and purgative properties. It appears in the Unani Pharmacopoeia of India, Part 1, where it is recognized under the name "Kamela" or "Kambil."

Traditional Use in Southeast Asia and the Pacific

In the northern regions of Thailand, the fruits and bark have assumed multifaceted roles in traditional medicine and as a reservoir of natural dye. Researchers have extracted numerous bioactive compounds from these fruits, unveiling a spectrum of pharmacological effects, including antiallergic, anti-inflammatory, antifungal, and antibiotic properties.

Scope of Ethnomedicinal Use

Mallotus philippensis has been reported for its therapeutic uses in 18 states of India and three other countries. Its fruit, seed, leaf, stem bark, root, flower, branches, whole plant, and young shoot are used in 67 different disease conditions, either through internal administration or external applications. Among these, maximum applications are indicated in the treatment of worms, skin disease, wounds, and burns. Its fruits have maximum applications in 48 disease conditions, followed by seed in 27, plant part unspecified in 27, leaf in 20, stem bark in 17, root in 11, flower in 9, branches in 1, whole plant in 1, and young shoot in 1 disease condition.

All parts of the plant — including glands and hairs from the capsules or fruits — are used as heating, purgative, anthelmintic, vulnerary, detergent, maturant, carminative, and alexiteric agents. The plant is also considered useful in treatment of bronchitis, abdominal disease, and spleen enlargement, and when taken with milk or curd can be quite useful for expelling tapeworms. Kamala is also used as an oral contraceptive in some traditional settings.

Approximately 27.46% of articles reviewed document its use for digestive disorders, indicating a notable prevalence in traditional treatment practices.

Historic Use as a Dye

Kamala, known locally as kampillaka, has been utilized traditionally in India and the Philippines for producing a vibrant orange-red dye derived from the glandular hairs covering the ripe fruits. This kamala powder has been applied to color silk and wool textiles, as well as traditional fabrics in regions like Bhutan. In India, the dye's bright hue made it valuable for ceremonial clothing and household items, while in the Philippines, it served similar purposes in folk dyeing practices.

3. Key Constituents and Active Compounds

Overall Chemical Profile

Mallotus philippinensis species are known to contain different natural compounds, mainly phenols, diterpenoids, steroids, flavonoids, cardenolides, triterpenoids, coumarins, isocoumarins, and many more, especially phenols; bergenin, mallotophilippinens, rottlerin, and isorottlerin have been isolated, identified, and reported to show interesting biological activities such as antimicrobial, antioxidant, antiviral, cytotoxicity, anti-inflammatory, immunoregulatory activity, and protein inhibition against cancer cells. The tree has been found to possess more than 50 different types of important phytochemicals of natural origin.

Rottlerin (Mallotoxin)

Rottlerin (mallotoxin) is a polyphenol natural product isolated from the Asian tree Mallotus philippensis that displays a complex spectrum of pharmacology. Chemically, rottlerin (mallotoxin) is a 5,7-dihydro-2,2-dimethyl-6-(2,4,6-trihydroxy-3-methyl-5-acetylbenzyl)-8-cinnamoyl-1,2-chromene, purified from Mallotus philippinensis (Euphorbiaceae). It is classified as a chromenochalcone. Rottlerin began to attract public attention as a useful compound with pharmaceutical potential in 1994, when Gschwendt et al. showed it to be a specific inhibitor of protein kinase C delta (PKCδ).

Isorottlerin and Kamalins (Acylphloroglucinol Derivatives)

The principal colouring substances are rottlerin (C₃₀H₂₈O₈), crystallizing in salmon-coloured needles or plates, and its yellow isomer isorottlerin, which together constitute about 11% of the weight of the kamala powder of ripe fruits. Several structurally related phloroglucinol-derived compounds known as kamalins have also been reported.

Kamalachalcones and Mallotophilippens

Two new chalcone derivatives (flavonoids), kamalachalcones A and B, with a unique ring system caused by dimerization between a dimethylchromene ring and a phenoxyl group, were isolated from kamala (M. philippinensis). Three other novel chalcone derivatives — mallotophilippens C, D, and E — were isolated from the fruits of M. philippinensis, along with lignans, chalcones, and dimeric chalcone derivatives. A specific compound, kamalachalcone E, a dimeric chalcone derivative isolated from Mallotus philippinensis, was identified as having antifungal activity.

Bergenin

Bergenin, an isocoumarin, was isolated in 1972 from the heartwood of M. philippinensis. This compound was also obtained from the bark and leaves of M. philippinensis. Bergenin has itself been independently studied for anti-inflammatory and hepatoprotective properties in other plant systems.

Tannins, Steroids, Triterpenoids, and Cardenolides

Cardiac glycosides have been identified in the seeds, including coroglaucigenin, corotoxigenin, coroglaucigenin L-rhamnoside, and corotoxigenin L-rhamnoside. Qualitative phytochemical analysis of M. philippensis leaves revealed the presence of phenolic compounds, steroids, flavonoids, alkaloids, diterpenes, and tannins. The plant contains compounds such as rottlerin, oxalic acid, and betulin from the stem bark. The fruit also contains significant fixed oil and tannins, with phenolic content reported at 541 mg/g.

4. Mechanisms of Action

Protein Kinase C Delta (PKCδ) Inhibition

Rottlerin, identified as the principal bioactive compound, functions as a multi-target molecule through mechanisms involving inhibition of protein kinase C delta (PKCδ) and modulation of apoptotic and autophagic pathways. Rottlerin is a specific PKC inhibitor, with IC₅₀ values for PKCδ of 3–6 μM, for PKCα,β,γ of 30–42 μM, and for PKCε,η,ζ of 80–100 μM. Protein kinase inhibition with some specificity for PKC by rottlerin involves strong competition between rottlerin and ATP. CaM-kinase III is suppressed by rottlerin as effectively as PKCδ, among different protein kinases tested.

However, the selectivity of rottlerin for PKCδ has been subsequently questioned: several studies using rottlerin as a PKCδ selective inhibitor based on in vitro studies showed it did not always block PKCδ activity and did block other kinase and non-kinase proteins in vitro. Rottlerin also uncouples mitochondria at high doses and results in depolarization of the mitochondrial membrane potential. It was found to reduce ATP levels, activate 5'-AMP-activated protein kinase, and affect mitochondrial production of reactive oxygen species (ROS). It is therefore difficult to conclude that rottlerin is a selective inhibitor of PKCδ, since there are biological and biochemical processes that are PKCδ-independent that may affect outcomes.

Mitochondrial Uncoupling and Apoptosis

Rottlerin acts as a direct mitochondrial uncoupler, and stimulates autophagy by targeting a signaling cascade upstream of mTORC1. Rottlerin induces apoptosis via caspase 3 activation. Rottlerin causes apoptosis in haematopoietic cell lines, and the apoptotic processing is inhibited by the caspase inhibitor z-VAD-fmk. The apoptosis-inducing activities were determined by nuclear condensation, sub-G1 appearance, DNA fragmentation, loss of mitochondrial membrane potential (Δψm), release of mitochondrial cytochrome c into cytoplasm, and proteolytic activation of caspase 9 and 3.

Potassium Channel Opening

Rottlerin is a potent large conductance potassium channel (BKCa²⁺) opener. BKCa²⁺ is found in the inner mitochondrial membrane of cardiomyocytes. Opening these channels is beneficial for post-ischemic changes in vasodilation. Other BKCa²⁺ channel openers are reported to limit the mitochondrial calcium overload due to ischemia. Rottlerin is also capable of reducing oxygen radical formation.

Anti-inflammatory Pathway Modulation

Rottlerin is a polyphenol natural product isolated from the Asian Kamala plant Mallotus philippinensis and displays a complex spectrum of pharmacology and an array of medicinal properties. It has been used as a protein kinase C-δ (PKC-δ) inhibitor. Upregulation of MMP-9 by phorbol ester via the PKCδ pathway may promote astrocytic migration, and this event could be attenuated by rottlerin. These data indicated that rottlerin may have anti-inflammatory activity by reducing related pathways of PKC-δ-dependent ROS-mediated MMP-9 expression in brain astrocytes.

Antioxidant Mechanisms

The phenolic fraction of M. philippensis shows total antioxidant activity (TAA) ranging from 0.58 mmol Trolox/g (fraction I) to 6.82 mmol Trolox/g (fraction IV), which is the strongest fraction showing antiradical activity against DPPH and reducing power. TAA of other extracts ranged from 0.05 to 1.79 mmol Trolox equiv./g. The antioxidant activity may also result from increased levels of enzymes such as superoxide dismutase (SOD) and catalase.

5. Scientific Evidence by Area of Use

The following section strictly separates traditional use claims from available scientific evidence. The overwhelming majority of evidence is preclinical (animal and in vitro). Human clinical evidence is extremely limited and is explicitly identified where it exists.

5.1 Anthelmintic Activity

Traditional use: Kampillaka is one of the best drugs mentioned in Ayurveda for worm infestation (Krimighana).

Clinical/human evidence: A study on 214 school children in five villages indicated the presence of one or the other intestinal parasite in most children. The roundworm, giardia, and hookworm were most frequently noted. A clinical trial to study the effect of Kampillaka on 76 school children showed fairly good effect, which was relatively more pronounced on roundworm infestation. A clinical trial of Kampillaka on 52 children infested with hookworm (Hymenolepis nana), administered a single dose for two days, showed satisfactory conversion of stools from positive to negative in 96 percent of patients.

In vitro / preclinical evidence: Aqueous and alcoholic extracts have been tested against filarial worms in vitro. A published study in the Indian Journal of Physiology and Pharmacology (1997, PMID 10235663) reported antifilarial activity against Setaria cervie (Nematoda: Filarioidea) in vitro. The effective preparation was 1/5th for aqueous and 1/11th for alcoholic extract compared to that for the whole worm, suggesting a cuticular permeability barrier. The stimulatory response of acetylcholine was blocked by aqueous extract on whole worm movements.

Evidence strength: The pediatric clinical trial data above is historically reported but lacks the rigor of modern randomized controlled trials (no published protocol, blinding status, or statistical analysis available in accessible full-text sources). The in vitro and preliminary clinical data provide suggestive support for anthelmintic activity, but formal modern RCTs are absent from the literature.

5.2 Antimicrobial Activity

Preclinical evidence: Evaluating various fractions for antibacterial activity demonstrated efficacy against various pathogenic microorganisms, particularly Pseudomonas aeruginosa and Escherichia coli, notably by the ethanolic and dichloromethane extracts. The extracts demonstrated significant antimicrobial activity with inhibition zones ranging from 12–26 mm for bacteria. Ethanol extracts showed notable efficacy against fungi Aspergillus flavus and Candida albicans.

The antifungal dimeric chalcone derivative kamalachalcone E was isolated from Mallotus philippinensis. The pharmacological activities such as antibacterial and antioxidant activities are often tested with crude extracts and in vitro rudimentary methods that can be sometimes misleading. Antimicrobial properties of the tree are extensively investigated, whereas other pharmacological properties like anthelmintic, antiviral, and anti-urolithiatic activities still need to be further investigated.

Evidence strength: Antimicrobial activity is the most extensively investigated pharmacological property of this plant. All evidence, however, is preclinical (in vitro), and no human clinical trials evaluating antimicrobial applications have been identified in the peer-reviewed literature.

5.3 Anti-cancer / Antiproliferative Activity

In vitro evidence: Rottlerin has been shown to be effective against several human tumor cell lines and in potentiating chemotherapy-induced cytotoxicity. Using the trypan blue exclusion assay, it was demonstrated that rottlerin reduced the viability in a dose- and time-dependent manner of human leukemia HL-60 cells, human acute T cell leukemia Jurkat cells, and mouse macrophage RAW 264.7 cells.

Methanolic extract of M. philippensis leaves was examined in vitro for cytotoxicity and apoptotic potential in MCF-7 breast cancer cell lines. The plant exhibits antioxidant, antimicrobial, antifilarial, anti-leukemic, anti-tumor, and hepatoprotective activities. Notably, it achieved an IC₅₀ of 1.5 mg/mL against HL-60 leukemia cells.

The active phytochemicals such as rottlerin and mallotophilippens are considered potential novel drugs for the treatment of cancer and tuberculosis in future research.

Evidence strength: All anti-cancer evidence is limited to in vitro cell line studies. No human clinical trials on cancer have been conducted or published. In vitro results cannot be extrapolated to clinical efficacy.

5.4 Anti-inflammatory and Analgesic Activity

Preclinical evidence: Beyond dermatological applications, M. philippensis exhibits systemic anti-inflammatory and analgesic effects. Experimental studies have shown significant inhibition of carrageenan-induced inflammation in animal models, which is a standard preclinical screen. The plant is known for pharmacological activities including anti-inflammatory and analgesic activity.

Evidence strength: Evidence is preclinical (animal models). No human clinical trials of anti-inflammatory efficacy have been published.

5.5 Hepatoprotective Activity

Preclinical evidence: A study intended to evaluate methanolic fruits extract of M. philippensis for hepatoprotective activities used the CCl₄ model (1 ml/kg body weight in liquid olive oil, ratio 1:1) and an ATT model (isoniazid 7.5 mg/kg, rifampicin 10 mg/kg, and pyrazinamide 35 mg/kg b.w.). Acute toxicity study and preliminary phytochemical screening were also studied. Results showed no toxicity profile in rats after oral administration of the methanolic fruits extract at the dose of 2 g/kg body weight.

A 2024 study assessed the hepatoprotective effect of ethyl acetate and methanol extracts and a flavanone isolated from M. philippensis fruit extract. Methanol and ethyl acetate fractions at two different doses (300 mg/kg and 500 mg/kg) and a flavanone (A4, 50 mg/kg) isolated from the fruits were tested for hepatoprotective potential in rats. Silymarin (50 mg/kg/day orally) was used as a standard drug. The effect on liver enzymes and serum cytokines was also verified in animal models, and histopathology and antioxidant tests were performed on liver tissue.

Pharmacological findings suggest hepatoprotective, antidiabetic, and antiallergic effects. While these findings remain exploratory, they underscore the need for comprehensive mechanistic and toxicological studies to elucidate the full therapeutic scope of M. philippensis.

Evidence strength: Hepatoprotective effects have been consistently demonstrated in rodent models using CCl₄ and drug-induced hepatotoxicity. No published human clinical trials have evaluated hepatoprotective applications.

5.6 Antidiabetic Activity

Preclinical evidence: The hydro-ethanolic bark extract showed significant increase in the levels of body weight, insulin, and significant decrease in blood glucose and glycosylated haemoglobin when administered orally for 30 days to STZ-induced diabetic rats at doses of 200 and 400 mg/kg body weight.

Evidence strength: All antidiabetic evidence is from streptozotocin (STZ)-induced diabetic rat models. No human clinical data have been published.

5.7 Wound Healing Activity

Preclinical evidence: A study published in PMC investigated the wound healing effects of M. philippensis fruit glandular hair extract in rat wound models. The study examined five selected molecules from the plant targeting eight essential proteins involved in the wound healing and inflammatory process. Considering that various phytoconstituents of the medicinal plant can simultaneously interact with multiple targets, a multiligand and multitarget approach was employed. Docking studies were performed using AutoDock Vina and molecular dynamics was performed using GROMACS 2019. The study revealed the potential interactions of five selected constituents with multiple chronic wound healing targets.

The powders and specific constituents extracted from Kamala are utilized as supplementary agents in external therapeutic interventions designed to facilitate the healing of ulcers and wounds.

Evidence strength: Wound healing evidence consists of in silico (molecular docking) and animal model studies; no controlled human trials have been published.

5.8 Antioxidant Activity

Preclinical / in vitro evidence: Mallotus philippinensis is an important source of molecules with strong antioxidant activity. Previous studies have highlighted its anticestodal, antibacterial, and wound healing activities. An investigation was designed to evaluate the total antioxidant activity and radical scavenging effect of 50% ethanol fruit glandular hair extract (MPE) and its role on human erythrocytes. MPE was tested for phytochemical content followed by HPLC analysis. Standard antioxidant assays including DPPH, ABTS, hydroxyl, superoxide radical, nitric oxide, and lipid peroxidation assays were determined along with total phenolic and flavonoids content.

The levels of reactive oxygen species (ROS) were significantly lowered by 20 μM rottlerin, which also inhibited further ROS generation in HCF-7 cell lines. The maintenance of anti-oxidant environment by rottlerin may involve increased levels of enzymes such as superoxide dismutase (SOD) and catalase.

Evidence strength: In vitro antioxidant activity is well-documented. Translational significance to human health remains unestablished.

5.9 Anti-tuberculosis Activity

Preclinical evidence: To gain insights into the antimycobacterial activity of rottlerin, molecular docking simulations were performed with therapeutic targets of M. tuberculosis, and it was observed that rottlerin binds into the inhibitory site of the anti-infective target diterpene synthase (Rv3378c). These findings indicate that rottlerin presents antimicrobial effects with antioxidant action and prominent therapeutic targets, showing its biotechnological potential for the development of new agents against Mycobacterium spp. infection.

Evidence strength: Limited to in silico molecular docking data. No in vivo or human evidence exists for anti-tuberculosis applications.

5.10 Anti-urolithiatic Activity

Preclinical evidence: The Ayurvedic formulation Vidangadi churna also contains Kamala as one of its major constituents. This formulation has been claimed to possess anti-urolithiatic activity, although well-replicated experiments using in vivo methods are still lacking. A probable mechanism of action may involve disruption of oxalate/calcium oxalate-induced signalling pathways of oxidative stress. This can be achieved by rottlerin, which has the ability to quench free radicals. A study conducted on male Wistar rats has shown that rottlerin can potentially prevent stone formation in kidneys.

Evidence strength: Preliminary animal data only.

6. Body Systems and Health Areas

The plant is known for pharmacological activities such as antimicrobial, antiviral, immunomodulatory, cytotoxic, purgative, anthelmintic, carminative, anti-inflammatory, antioxidant, antidiabetic, antidiarrheal, analgesic, and antifertility activity. The plant is useful in treatment of respiratory, digestive, psychological, excretory, reproductive, skeletal, and skin disorders.

Gastrointestinal system: Purgative, anthelmintic, carminative, and antiparasitic uses are among the oldest and most consistently documented applications in both Ayurvedic and Unani traditions and in early clinical reports.
Integumentary (skin) system: The glands and hairs of the fruit and the leaves are recommended for dermal problems. Traditional applications include treatment of scabies, ringworm, and other parasitic skin conditions.
Hepatic system: Preclinical models indicate hepatoprotective effects via modulation of liver enzyme markers (ALT, AST) and proinflammatory cytokines.
Endocrine/metabolic system: Animal models suggest antidiabetic effects via glycemic control mechanisms.
Oncological (research interest): In vitro studies on cancer cell lines show antiproliferative and apoptotic effects mediated principally through PKCδ inhibition and caspase activation.
Urinary system: Traditional use and preliminary animal evidence for anti-urolithiatic (anti-kidney stone) activity.
Immune/inflammatory: Preclinical evidence for anti-inflammatory and immunomodulatory activity.

7. Dosage Forms and Reported Dosages

The following dosages are drawn from traditional medicine references and preclinical research, as reported in the cited sources. These are not clinical recommendations.

Traditional oral anthelmintic dose (Ayurveda/Unani): The fruit glands and hairs are employed as an anthelmintic, often administered in doses of 1–2 grams mixed with milk or curd to enhance efficacy.
Traditional purgative use: The powder also acts as a mild purgative for treating constipation, abdominal bloating, and colic, while bark and leaf decoctions typically 30–50 ml address skin conditions.
Hepatoprotective preclinical dose: Methanol and ethyl acetate fractions of M. philippensis fruits at two different doses — 300 mg/kg and 500 mg/kg — and a flavanone (A4, at 50 mg/kg) isolated from the fruits were tested for hepatoprotective potential in rats.
Antidiabetic preclinical dose: The hydro-ethanolic bark extract was administered orally for 30 days to STZ-induced diabetic rats at doses of 200 and 400 mg/kg body weight.
Acute toxicity preclinical dose: No toxicity profile was observed in rats after oral administration of the methanolic fruits extract at the dose of 2 g/kg body weight.
Rottlerin PKCδ inhibition (in vitro): Rottlerin has IC₅₀ values for PKCδ of 3–6 μM, for PKCα,β,γ of 30–42 μM, and for PKCε,η,ζ of 80–100 μM.

8. Safety Considerations and Notable Interactions

Reproductive Toxicity

A specific and notable safety signal has been identified: an ether extract of Kamala (Mallotus philippensis Mull. Arg Lam.) seed was found to induce adverse effects on reproductive parameters of female rats. Reprod Toxicol. 2005;20(1):149–56. doi: 10.1016/j.reprotox.2004.12.008, PMID 15808798. The traditional use of Kamala as an oral contraceptive may relate to this effect. These findings from an animal study raise concerns about use in women of reproductive age, though no human reproductive toxicology data have been published.

Mitochondrial Uncoupling at High Doses

Rottlerin uncouples mitochondria at high doses and results in depolarization of the mitochondrial membrane potential. It was found to reduce ATP levels, activate 5'-AMP-activated protein kinase, and affect mitochondrial production of reactive oxygen species (ROS). This mechanism means that at pharmacologically active doses, rottlerin has the potential for cellular energy disruption independent of its PKCδ inhibitory effects.

Cardiac Glycoside Content

Cardiac glycosides including coroglaucigenin, corotoxigenin, coroglaucigenin L-rhamnoside, and corotoxigenin L-rhamnoside have been identified in the seeds of M. philippensis. The presence of cardenolides (a class of cardiac glycosides) in the seeds warrants attention to the part of the plant used and dose, as cardiac glycosides have a narrow therapeutic index.

Purgative Effects

Kampilu is regarded as a very strong laxative (virechaka). Traditional texts consistently classify it as strongly heating and purgative, and overuse is associated with gastrointestinal irritation in historical Ayurvedic descriptions.

Need for Further Toxicological Data

The existing knowledge is very limited about Mallotus philippinensis and its different parts, including stem, leaf, and fruit. Further, more detailed safety data pertaining to acute and subacute toxicity and cardio- and immunotoxicity also needs to be generated for crude extracts and its pure isolated compounds.

Selectivity and Off-target Effects of Rottlerin

It is difficult to say that rottlerin is a selective inhibitor of PKCδ, since there are biological and biochemical processes that are PKCδ-independent that may affect outcomes. This non-selectivity has implications for both its potential therapeutic utility and the interpretation of its toxicological profile.

Evidence Gap Summary

Traditional uses of the Kamala tree need to be scientifically investigated and validated in order to develop drugs from this tree. Pharmacological activities such as antibacterial and antioxidant activities are often tested with crude extracts and in vitro rudimentary methods that can be sometimes misleading. The overall evidence base for clinical use in humans consists almost entirely of preclinical (animal and cell line) data, with the notable exception of the historical pediatric anthelmintic trial described above, which lacks modern methodological standards. No large-scale randomized controlled human trials have been identified for any indication.

References

Health Conditions

Health conditions that Kamala may help support.

No conditions available.

Body Systems

Body systems that Kamala may help support.

No body systems available.