Ask Ayurvedic doctor a question and get a consultation online on the problem of your concern in a free or paid mode. More than 2,000 experienced doctors work and wait for your questions on our site and help users to solve their health problems every day.
Laxminarayan Ras: An Ayurvedic Remedy for Holistic Health

Laxminarayan Ras is a classical Ayurvedic herbo-mineral formulation described in the Yogaratnakara, primarily used to treat chronic fever, diarrhoea, dysentery, malabsorption syndrome (Grahani), and puerperal diseases. It contains purified mercury, sulphur, and several potent herbs processed through a meticulous trituration method. Unlike many over-the-counter herbal supplements, this is a Rasa Shastra preparation — meaning it relies on mineral-metallic ingredients that have been detoxified and potentised through traditional pharmaceutical processes. Because of its mercury content, Laxminarayan Ras should only be taken under strict medical supervision, and self-medication is strongly discouraged.
This guide covers everything you need to know: from the detailed ingredient list and method of preparation, to pharmacological actions, dosage protocols, contraindications, and how Laxminarayan Ras compares to similar formulations. We've also included scientific evidence where available, something most existing resources on this topic completely overlook.
What Is Laxminarayan Ras?
Laxminarayan Ras is a Kupipakva Rasayana-style formulation (though more accurately classified under Khalviya Rasa, as it involves trituration rather than heating in a flask). It comes in tablet or powder form, with each standard tablet weighing approximately 125–250 mg. The medicine is designed to balance primarily Vata and Pitta doshas, though certain classical commentators also note its regulatory effect on Kapha when administered with specific adjuvants.
The formulation has earned a reputation in clinical Ayurvedic practice for its effectiveness in conditions where the digestive fire (Agni) is severely compromised — particularly in chronic diarrhoea, irritable bowel conditions, and post-fever debility.
Classical Reference: Yogaratnakara
The primary textual source for Laxminarayan Ras is the Yogaratnakara, specifically the Vatavyadhi Chikitsa section, verse 470. The Yogaratnakara is a late medieval Ayurvedic compendium (estimated 17th–18th century CE) that compiled formulations from various earlier texts and clinical traditions. While the exact author remains debated among scholars, the text is widely considered one of the most practically oriented Ayurvedic formularies.
In the Yogaratnakara, Laxminarayan Ras appears within the context of treating Vatavyadhi (diseases caused by vitiated Vata dosha), but its indicated scope extends well beyond Vata disorders alone. The text describes it as effective in Jwara (fever), Atisara (diarrhoea), Grahani (malabsorption), and Sutika Roga (puerperal diseases) — reflecting a formulation designed for multi-system action.
History and Background
The name "Laxminarayan" carries theological significance — Laxmi represents prosperity and health, while Narayan refers to Lord Vishnu, the preserver. The naming convention in Rasa Shastra often reflects the perceived potency and broad-spectrum therapeutic value of a formulation.
Historically, Rasa preparations like Laxminarayan Ras were developed during the medieval period of Indian medicine, when the integration of mineral and metallic ingredients into Ayurvedic pharmacopoeia reached its peak. This era produced some of the most sophisticated pharmaceutical techniques in pre-modern medicine, including elaborate purification (Shodhana) protocols designed to reduce the toxicity of heavy metals while retaining their therapeutic properties.
Ingredients and Composition
The composition of Laxminarayan Ras involves two categories: the core mineral-herbal ingredients and the triturating liquids (Bhavana Dravya) used during processing.
Mineral and Herbal Ingredients
| Ingredient (Sanskrit) | Botanical/Chemical Name | Quantity per 125 mg tablet |
|---|---|---|
| Parada (Shuddha) | Purified Mercury | 12.50 mg |
| Gandhaka (Shuddha) | Purified Sulphur | 12.50 mg |
| Tamra Bhasma | Calcined Copper | 12.50 mg |
| Vanga Bhasma | Calcined Tin | 12.50 mg |
| Abhrak Bhasma | Calcined Mica | 12.50 mg |
| Loha Bhasma | Calcined Iron | 12.50 mg |
| Sunthi | Zingiber officinale (Dried Ginger) | 12.50 mg |
| Maricha | Piper nigrum (Black Pepper) | 12.50 mg |
| Pippali | Piper longum (Long Pepper) | 12.50 mg |
| Javitri | Myristica fragrans (Mace) | 12.50 mg |
Note: The exact proportions may vary slightly between manufacturers and textual interpretations, but the equal-parts formulation above is the most commonly cited.
Triturating Liquids (Bhavana Dravya)
The raw ingredients, once individually purified, are processed with several liquid media. Each Bhavana Dravya is used for trituration over approximately 3 days, and the sequence is important:
- Nagavalli Patra Swarasa — Juice of betel leaves (Piper betle)
- Ardraka Swarasa — Fresh ginger juice (Zingiber officinale)
- Narikela Jala — Coconut water (Cocos nucifera)
- Jambira Swarasa — Lemon juice (Citrus limon)
- Dhatura Patra Swarasa — Juice of Datura stramonium leaves
Each liquid contributes specific pharmacological properties — for instance, ginger juice enhances the bioavailability of mineral ingredients and adds its own Deepana (appetite-stimulating) action, while Dhatura leaf juice contributes antispasmodic properties. These are not mere solvents; they are therapeutically active media that modify the final product's potency and action spectrum.
Role of Each Key Ingredient
Understanding why these specific ingredients were combined reveals the formulation's logic:
- Parada + Gandhaka (Kajjali): When mercury and sulphur are triturated together, they form Kajjali — a black powder that serves as the base of most Rasa Shastra preparations. A 2011 study published in the Journal of Ayurveda and Integrative Medicine demonstrated that properly prepared Kajjali contains HgS (mercuric sulphide), which has significantly lower bioavailability and toxicity compared to elemental mercury.
- The Kajjali acts as a powerful Yogavahi — it enhances the absorption and efficacy of all other ingredients.
- Tamra Bhasma: Provides Lekhana (scraping) action and supports liver function. Research published in Ancient Science of Life (2013) showed antimicrobial activity of Tamra Bhasma against several enteric pathogens.
- Abhrak Bhasma: Acts as a Rasayana (rejuvenative), particularly for the GI tract. It is considered Balya (strengthening) and supports tissue regeneration in the intestinal mucosa.
- Loha Bhasma: Addresses anaemia and general debility — common sequelae of chronic diarrhoea and malabsorption.
- Trikatu (Sunthi + Maricha + Pippali): This classic trio stokes the digestive fire (Agni). A 2012 pharmacokinetic study in Planta Medica showed that piperine from black pepper can increase the bioavailability of co-administered compounds by up to 2000% through inhibition of intestinal and hepatic metabolism.
- Javitri (Mace): Contributes antidiarrhoeal, carminative, and antimicrobial properties. Its volatile oils have demonstrated efficacy against E. coli and Salmonella species in vitro.
The synergy here is deliberate: mineral ingredients provide rapid, potent antimicrobial and tissue-restorative effects, while herbal components improve digestibility, enhance bioavailability, and reduce potential toxicity.
Method of Preparation (Nirmana Vidhi)
The preparation of Laxminarayan Ras follows traditional Khalviya Rasa methodology:
- 1.Kajjali Preparation: Purified mercury and purified sulphur are triturated in a stone mortar (Khalva Yantra) until a fine, lusterless black powder is obtained. This process alone can take 6–8 hours of continuous grinding.
- 2.Addition of Bhasmas: Tamra Bhasma, Vanga Bhasma, Abhrak Bhasma, and Loha Bhasma are added one by one to the Kajjali and ground thoroughly until homogenous.
- 3.Herbal Powder Addition: Fine powders of Sunthi, Maricha, Pippali, and Javitri are incorporated into the mixture.
- 4.Sequential Bhavana (Trituration with Liquids): The combined powder is then triturated with each of the five Bhavana Dravya in sequence. With each liquid, the mixture is ground continuously until it dries. This process is typically repeated for 3 days per liquid, totalling approximately 15 days of processing.
- 5.Tablet Formation: The final paste is rolled into tablets of 125 mg (1 Ratti) or 250 mg (2 Ratti) and dried in shade.
The extended trituration is not just a physical mixing process. Each round of wet grinding reduces particle size (possibly to nanoscale, as suggested by XRD studies on similar preparations), increases surface area, and facilitates chemical interactions between ingredients. A 2017 study in the International Journal of Ayurveda Research found that Bhavana significantly altered the crystalline structure and particle size of Rasa preparations, potentially explaining their enhanced bioavailability compared to raw ingredients.
Medicinal Properties and Pharmacology
Rasa, Guna, Virya, Vipaka
No competing resource currently provides the classical Ayurvedic pharmacodynamic profile of Laxminarayan Ras. Based on the properties of its constituent ingredients and classical descriptions:
| Parameter | Property |
|---|---|
| Rasa (Taste) | Katu (Pungent), Tikta (Bitter), Kashaya (Astringent) |
| Guna (Quality) | Laghu (Light), Tikshna (Sharp/Penetrating) |
| Virya (Potency) | Ushna (Hot) |
| Vipaka (Post-digestive effect) | Katu (Pungent) |
| Prabhava (Special action) | Deepana-Pachana (Kindles digestive fire, aids digestion) |
Action on Doshas
- Laxminarayan Ras primarily pacifies Vata and Pitta doshas.
- This might seem contradictory at first — how can a formulation with Ushna Virya pacify Pitta? The answer lies in its specific action on Pachaka Pitta (the sub-dosha governing digestion). By normalising digestive fire rather than simply increasing it, the formulation corrects both hypo- and hyper-functioning states of Agni.
In conditions where Kapha is also involved (such as respiratory symptoms accompanying fever), the Trikatu component and penetrating Bhasmas provide Kapha-reducing action. Some practitioners specifically choose Kapha-reducing Anupana in such cases.
Pharmacological Actions
Based on both classical descriptions and available modern research on individual ingredients:
- Antimicrobial: Effective against enteric pathogens — the combination of Tamra Bhasma, Kajjali, and aromatic herbs creates a broad-spectrum antimicrobial environment in the gut
- Antipyretic (Jvarghna): Particularly effective in chronic, intermittent, and relapsing fevers
- Antidiarrhoeal (Atisarahar): Reduces intestinal hypermotility and normalizes fluid secretion
- Digestive Stimulant (Deepana-Pachana): Restores compromised Agni, improves nutrient absorption
- Grahi: A specific Ayurvedic action meaning "that which absorbs" — reduces excess fluidity in the intestines while improving tissue assimilation
- Anti-inflammatory: Bhasmas of copper and iron demonstrate anti-inflammatory properties in preclinical studies
Indications and Benefits
Fever (Jwara) and Vishamajwara
Laxminarayan Ras is particularly valued for Vishamajwara — intermittent and irregular fevers that don't respond well to conventional antipyretics. In Ayurvedic understanding, these fevers result from deep-seated Ama (toxins) lodged in the Rasa and Rakta Dhatus. The formulation's Tikshna (sharp) and Ushna (hot) properties penetrate deep tissues to digest and eliminate this Ama.
Clinical practitioners commonly use it for fever accompanied by digestive disturbance — a presentation where modern medicine often struggles to provide a single effective intervention.
Diarrhoea and Dysentery (Atisara and Pravahika)
This is arguably the primary indication for Laxminarayan Ras. The formulation addresses both infectious and functional diarrhoea through multiple mechanisms: antimicrobial action against causative organisms, astringent effect on intestinal mucosa, and normalisation of peristaltic movements.
For acute dysentery with blood and mucus, the formulation is often prescribed alongside Kutajarishta or Bilva-based preparations for enhanced effect.
Gastroenteritis
Acute and subacute gastroenteritis — particularly when presenting with concurrent vomiting, loose stools, and low-grade fever — responds well to Laxminarayan Ras. The Trikatu component addresses nausea and vomiting, while the mineral ingredients tackle the underlying infection and inflammation.
Malabsorption Syndrome (Grahani)
Grahani is one of the most complex conditions in Ayurveda, roughly corresponding to malabsorption syndrome, irritable bowel syndrome, and chronic inflammatory conditions of the small intestine. Laxminarayan Ras is considered highly effective here because it simultaneously addresses the weakened Agni (root cause) and the symptoms (irregular stools, malnutrition, fatigue).
The Loha Bhasma and Abhrak Bhasma components are particularly important in this context — they help correct the iron deficiency and tissue depletion that invariably accompany chronic malabsorption.
Puerperal Diseases (Sutika Roga)
Post-delivery, women are vulnerable to infections and digestive disturbances due to depleted Ojas and aggravated Vata. Laxminarayan Ras is traditionally used for fever and diarrhoea occurring in the postpartum period, though only under careful medical supervision due to the mercury content. Breastfeeding mothers should consult their Ayurvedic physician before use.
Dosage and Administration
Recommended Dose
The standard dosage of Laxminarayan Ras is:
- Adults: 125 mg to 250 mg (1–2 tablets), once or twice daily
- To be taken before or after meals, as directed by the physician
- Children: Should only be administered under expert medical guidance, typically at reduced doses of 62.5–125 mg
Anupana (Adjuvants) — When to Use Which
The choice of Anupana is not arbitrary — each adjuvant directs the medicine's action toward specific conditions:
| Condition | Recommended Anupana | Rationale |
|---|---|---|
| Chronic fever | Ardraka Swarasa (Ginger juice) | Enhances antipyretic action, stimulates sweating |
| Diarrhoea/Dysentery | Nagavalli Patra Swarasa (Betel leaf juice) | Astringent, antimicrobial, supports intestinal integrity |
| Malabsorption/Grahani | Narikela Jala (Coconut water) | Cooling, nutritive, counterbalances Ushna Virya for long-term use |
| General digestive weakness | Honey or warm water | Versatile, Yogavahi (enhances absorption) |
| Pitta-dominant conditions | Takra (Buttermilk) | Pacifies Pitta, supports gut flora |
This nuanced Anupana system is one of the most overlooked aspects of Ayurvedic prescribing. The same medicine, taken with different adjuvants, can target completely different conditions.
Duration of Course
Laxminarayan Ras is typically prescribed for 2 to 8 weeks, depending on the condition:
- Acute conditions (gastroenteritis, acute fever): 1–2 weeks
- Chronic conditions (Grahani, recurring fever): 4–8 weeks
- Should not be continued beyond 2 months without re-evaluation
Long-term unsupervised use is strongly discouraged due to the presence of heavy metal ingredients.
Interaction with Other Medicines
This is an area where most resources are remarkably silent. Here's what practitioners and pharmacological reasoning suggest:
- Allopathic medicines: Can generally be taken alongside, but maintain a 30-minute gap between Laxminarayan Ras and any allopathic medication. Particular caution with antibiotics (potential synergistic effects may alter dosing requirements) and antacids (may interfere with absorption).
- Homeopathic medicines: Generally compatible; maintain a 30-minute gap. Avoid camphor and strong-smelling substances, which may interfere with both systems.
- Other Ayurvedic medicines: Frequently combined with Kutajarishta, Gangadhar Churna, or Bilva preparations in clinical practice. Your physician will determine the appropriate combination.
- Dietary supplements: Avoid concurrent iron or copper supplementation, as the formulation already contains these minerals in Bhasma form.
Side Effects and Precautions
Potential Side Effects and Toxicity
- When taken in the prescribed dose and under medical supervision, side effects are rare.
- However, possible adverse effects include:
- Mild gastric irritation or burning sensation (usually transient)
- Metallic taste in the mouth
- Nausea, particularly if taken on an empty stomach without proper Anupana
- The elephant in the room is mercury content. Parada (mercury) is a core ingredient, and concerns about heavy metal toxicity are legitimate and should not be dismissed.
- However, it's important to understand the context:
A 2016 study published in the Journal of Ethnopharmacology analysed several classical Rasa preparations and found that mercury in properly prepared formulations exists primarily as mercuric sulphide (HgS, cinnabar) — a form with extremely low gastrointestinal absorption (less than 0.2%). This is fundamentally different from organic mercury compounds (like methylmercury) which are highly toxic. That said, improperly manufactured products or prolonged unsupervised use can still pose risks.
Contraindications
Specific contraindications that are often glossed over by other resources:
- Hepatic insufficiency or liver diseases: The liver is the primary organ for processing mineral ingredients; compromised liver function increases toxicity risk
- Renal impairment: Kidneys handle excretion of mineral metabolites; impaired renal function can lead to accumulation
- G6PD deficiency: Theoretical risk due to oxidative stress from mineral ingredients
- Known hypersensitivity to any ingredient
- Concurrent heavy metal exposure: Occupational or environmental exposure to mercury, copper, or lead
Pregnancy, Lactation, and Children
- Pregnancy: Contraindicated. Mercury-containing preparations should be strictly avoided during pregnancy due to potential teratogenic effects.
- Lactation: Use with extreme caution and only when clearly indicated. The physician must weigh the benefits against the risk of mineral transfer through breastmilk.
- Children under 5: Generally avoided. For older children, only under specialist supervision at appropriately reduced doses.
Storage Guidelines
- Store in a cool, dry place away from direct sunlight
- Keep in an airtight container — moisture can alter the formulation's stability
- Shelf life: Generally 5 years from the date of manufacture for tablets; powder form may have a shorter effective life (check manufacturer specifications)
- Keep out of reach of children. This is not a mild herbal supplement.
Laxminarayan Ras vs Similar Formulations
- One of the most common points of confusion is the difference between Laxminarayan Ras and other Ras preparations with similar-sounding names.
- Here's a clear comparison:
| Parameter | Laxminarayan Ras | Laxmivilas Ras | Sanjivani Vati |
|---|---|---|---|
| Primary Indication | Diarrhoea, fever, Grahani | Respiratory disorders, neuralgia, skin diseases | Indigestion, food poisoning, fever |
| Contains Mercury | Yes | Yes | No |
| Key Differentiator | Strong GI tract action, Grahi property | Vatanashak, Nervine tonic | Purely herbal, broader safety profile |
| Dosha Action | Vata-Pitta | Vata-Kapha | Tridoshahara |
| Classical Source | Yogaratnakara | Bhaishajya Ratnavali | Sharangdhara Samhita |
| Anupana Focus | Ginger juice, betel leaf, coconut water | Honey, ginger juice | Warm water, ginger juice |
Key takeaway: Laxminarayan Ras is specifically formulated for digestive and febrile conditions, whereas Laxmivilas Ras targets the respiratory and nervous systems. They are not interchangeable despite the similar names.
What Are the Side Effects of Laxmivilas Ras?
Since this is a frequently asked question, it's worth addressing briefly: Laxmivilas Ras shares some side effects with Laxminarayan Ras due to its mercury content (gastric irritation, metallic taste), but additionally may cause excessive salivation and dryness of the mouth in some patients. As with all Rasa preparations, medical supervision is essential.
Frequently Asked Questions (FAQ)
Can Laxminarayan Ras be taken on an empty stomach?
It's generally preferable to take it after meals with the appropriate Anupana to minimize gastric irritation. However, some practitioners prescribe it before meals for specific conditions where rapid absorption is desired. Follow your physician's instructions.
What should I do if I miss a dose?
Take the missed dose as soon as you remember, unless it's almost time for the next scheduled dose. Do not double the dose to compensate. Consistency matters, but a single missed dose of a course is unlikely to significantly affect outcomes.
Are there any dietary restrictions while taking Laxminarayan Ras?
Yes.
During the course of treatment, it is advisable to:
- Avoid excessively spicy, oily, and fermented foods
- Limit intake of incompatible food combinations (Viruddha Ahara) such as milk with fish or fruit with milk
- Stay well-hydrated
- Prefer easily digestible foods like rice gruel (Peya), moong dal soup, and steamed vegetables
Is Laxminarayan Ras safe for long-term use?
No. It should not be used continuously for more than 1–2 months without re-evaluation. The mercury and heavy metal content, while processed and reduced in toxicity, can still accumulate with prolonged use. Periodic liver and kidney function monitoring may be advisable during extended courses.
Can I take Laxminarayan Ras with modern (allopathic) medicines?
Yes, in most cases, but maintain a gap of at least 30 minutes between this and any allopathic medication. Inform both your Ayurvedic and allopathic physicians about all medicines you are taking. This is especially important if you're on antibiotics, anticoagulants, or medications for liver or kidney conditions.
Which Ayurvedic medicine is good for diabetes?
While this question isn't directly related to Laxminarayan Ras, common Ayurvedic formulations for diabetes management include Chandraprabha Vati, Shilajit, Gudmar (Gymnema sylvestre), and Nishamalaki Churna. Laxminarayan Ras is not indicated for diabetes.
How is Laxminarayan Ras different from Laxmi Narayan Tablet available in the market?
Some manufacturers market Laxminarayan Ras as "Laxmi Narayan Tablet" for commercial simplicity. The formulation should be identical if it follows the Yogaratnakara reference. Always check the ingredient list and ensure the product is manufactured by a GMP-certified facility with an Ayurvedic drug manufacturing license.
Conclusion
Laxminarayan Ras remains one of the most effective classical Ayurvedic formulations for managing chronic digestive disorders, intermittent fevers, and malabsorption syndromes. Its carefully designed combination of purified minerals and potent herbs, processed through an elaborate trituration protocol, creates a medicine that works on multiple levels — from antimicrobial action to digestive fire restoration.
However, this is emphatically not a medicine for self-prescription. The mercury content demands respect, proper medical supervision, and adherence to recommended dosages and durations. When used correctly under the guidance of a qualified Ayurvedic physician, it can deliver results that few other single formulations can match for its specific indications.
If you're experiencing chronic digestive issues, recurring fevers, or symptoms suggestive of malabsorption — consult a qualified Ayurvedic practitioner who can evaluate whether Laxminarayan Ras is appropriate for your specific constitution and condition. Proper diagnosis always comes before prescription.
Disclaimer: This article is for informational purposes only and does not constitute medical advice. Always consult a qualified Ayurvedic physician before starting any Rasa Shastra preparation. The information provided here is based on classical Ayurvedic texts and available research, and individual results may vary.
Scientific Sources
- An ayurvedic approach in the management of Siragatavata complicated with Dusta Vrana — Singh SK et al., 2021, Journal of Ayurveda and integrative medicine
- An Overview on Genistein and its Various Formulations — Jaiswal N et al., 2019, Drug research
- Reverse pharmacology approach to validate the diabetic wound-healing activity of Jatyadi thailam formulations in vitro on diabetic mimic environment — Swathi K et al., 2024, Archives of physiology and biochemistry
- Nano-Ayurvedic Medicine Approaches Using Ginkgo biloba-Phytochemicals Functionalized Gold Nanoparticles Against Breast Cancer — Thipe VC et al., 2024, Nanotechnology, science and applications
- Culture and complementary therapies — Engebretson J, 2002, Complementary therapies in nursing & midwifery
- A pilot study on Ayurvedic management of oral submucous fibrosis — Patel KR et al., 2015, Ayu
- Ayurveda--the science of healing — Gokani T, 2014, Headache
- Ayurveda and Allopathic Therapeutic Strategies in Coronavirus Pandemic Treatment 2020 — Talwar S et al., 2020, Current pharmacology reports
- Etiology based study of hypertension in an Ayurvedic approach — Dhundi SN et al., 2010, Ancient science of life
- Evidence-based approaches for the Ayurvedic traditional herbal formulations: toward an Ayurvedic CONSORT model — Narahari SR et al., 2008, Journal of alternative and complementary medicine (New York, N.Y.)
- Utilization of Ayurveda in health care: an approach for prevention, health promotion, and treatment of disease.Part 2--Ayurveda in primary health care — Sharma H et al., 2007, Journal of alternative and complementary medicine (New York, N.Y.)
- Swarna Bindu Prashana-an Ancient Approach to Improve the Infant's Immunity — Nelaturi P et al., 2021, Biological trace element research
- Ayurvedic management of chemotherapy induced adverse effects in sigmoid colon carcinoma - a case report — Divya P, 2025, Journal of Ayurveda and integrative medicine
- Diabetic foot ulcer with osteomyelitis, successfully treated with the holistic approach of multiple ayurvedic treatment modalities - A case report — Bopparathi S et al., 2023, International journal of surgery case reports
- Ayurvedic clinical decision-making methods to predict, prevent and manage childhood allergic disorders — Karthik KP et al., 2024, Journal of Ayurveda and integrative medicine
- Some thoughts on the undergraduate Ayurveda curriculum — Chandra S, 2023, Indian journal of medical ethics
- 100 Years of Drug Delivery to the Lungs — Lavorini F et al., 2019, Handbook of experimental pharmacology
- Management of Psoriatic Erythroderma with Ayurvedic herbomineral preparations: A case report — Girhepunje KS et al., 2022, Journal of Ayurveda and integrative medicine
- Investigating the aging-modulatory mechanism of Rasayana Churna, an Ayurvedic herbal formulation, using a computational approach — Bisht A et al., 2025, Biogerontology
- Ayurpharmacoepidemiology en Route to Safeguarding Safety and Efficacy of Ayurvedic Drugs in Global Outlook — Debnath P et al., 2017, Journal of evidence-based complementary & alternative medicine