Age Ayurveda Nighantu

Gudmar Herb

Gymnema sylvestre

Gudmar Herb (Gymnema sylvestre) is a plant used in Ayurveda. Whole herb products are less concentrated than standardized extracts. Bioavailability: Gymnema sylvestre whole leaf (as opposed to standardized extract) provides the full phytochemical matrix including gymnemic acids, flavonoids, saponins, tannins, and fiber.

Key facts
Botanical nameGymnema sylvestre
FamilyApocynaceae · other entries in this family
OrderGentianales
Also known asGudmar Herb, GudmarHerb
Taxon identifiersGBIF 8040540 · Wikidata Q2725835 · NCBI Taxonomy 4068

This entry and gudmar describe the same drug, Gymnema sylvestre, under different names. Both pages are kept because both names are in use; the other is treated as the primary record for citation.

Names and identification

LanguageName
EnglishGudmar_Herb

What is it made of?

Key Active Markers

  • Derived from constituent herbs (see individual herb profiles)
  • Standardized on primary bioactive markers

Analytical Methods: HPLC fingerprinting, TLC (identity), LC-MS/MS (marker quantification)

Dosage forms and preparation

Dosage Forms: Dried leaf (whole/cut), Leaf powder, Herbal tea (infusion/decoction), Capsule (whole herb), Tincture (1:5 in 60% ethanol)

Standard Dosage: Dried leaf: 2-4g as infusion/decoction 2-3 times daily; Leaf powder: 3-6g twice daily; 500mg whole leaf capsule 3 times daily; 3-5ml tincture three times daily. Whole herb products are less concentrated than standardized extracts.

Bioavailability: Gymnema sylvestre whole leaf (as opposed to standardized extract) provides the full phytochemical matrix including gymnemic acids, flavonoids, saponins, tannins, and fiber. Gymnemic acid content in whole leaf is typically 1-4% (vs 25-75% in standardized extracts), meaning larger doses are needed. The fiber and tannin matrix may modulate absorption kinetics - slower release but potentially more sustained action. Whole leaf retains gurmarin peptide (partially destroyed during extraction) which contributes to sweet-taste suppression. Traditional decoction preparation partially hydrolyzes glycosidic bonds, potentially enhancing aglycone bioavailability.

Optimal Timing: Tea or capsule 15-30 minutes before meals for glucose management; traditional leaf chewing before meals for sweet-taste suppression

Standardized Extract: Not applicable - this is a whole herb product. Characterize by: total gymnemic acid content (1-4%), HPTLC fingerprint, organoleptic profile, particle size distribution for powder, essential oil content.

Shelf Life: Dried whole leaf: 2 years; Powder: 1.5 years; Capsule: 2 years; Tincture: 3 years; Tea bags: 1.5 years

Storage: Dried leaf: airtight, moisture-proof containers below 25 deg C in dark place. Tea bags: individually sealed, nitrogen-flushed. Powder: airtight, opaque containers with desiccant.

Marker Compounds: Gymnemic acids (total, 1-4% in whole leaf), Gurmarin (peptide), Beta-sitosterol, Stigmasterol, Flavonoids, Total tannins

Extraction Methods

  • Hot water infusion/decoction (traditional)
  • Simple drying and powdering (Churna)
  • Hydroalcoholic tincture (1:5 in 60% ethanol)
  • No concentration/standardization - whole herb products

Synergistic Combinations

  • Same synergies as Gudmar (standardized) but at whole-herb potency levels
  • With Jamun (Syzygium) leaf for anti-diabetic tea blend
  • With Neem leaf for blood-purifying and metabolic tea
  • With Tulsi for immune-metabolic herbal tea combination

Published research

Literature indexed in PubMed that concerns this subject, grouped by study type. A paper appearing here is a record of what has been published, not evidence that the subject works, and laboratory or animal results do not transfer to people. Study titles link to PubMed so you can read the source rather than take our word.

Systematic reviews and meta-analyses3

  1. Devangan S, Varghese B, Johny E and others. 2021. The effect of Gymnema sylvestre supplementation on glycemic control in type 2 diabetes patients: A systematic review and meta-analysisPhytotherapy research : PTR. PMID 34467577 · doi:10.1002/ptr.7265
  2. Pothuraju R, Sharma RK, Chagalamarri J and others. 2014. A systematic review of Gymnema sylvestre in obesity and diabetes managementJournal of the science of food and agriculture. PMID 24166097 · doi:10.1002/jsfa.6458
  3. Yeh GY, Eisenberg DM, Kaptchuk TJ and others. 2003. Systematic review of herbs and dietary supplements for glycemic control in diabetesDiabetes care. PMID 12663610 · doi:10.2337/diacare.26.4.1277

Randomised controlled trials3

  1. Turner S, Diako C, Kruger R and others. 2022. The Effect of a 14-Day gymnema sylvestre Intervention to Reduce Sugar Cravings in AdultsNutrients. PMID 36558446 · doi:10.3390/nu14245287
  2. Gaytán Martínez LA, Sánchez-Ruiz LA, Zuñiga LY and others. 2021. Effect of Gymnema sylvestre Administration on Glycemic Control, Insulin Secretion, and Insulin Sensitivity in Patients with Impaired Glucose ToleranceJournal of medicinal food. PMID 32460589 · doi:10.1089/jmf.2020.0024
  3. Zuñiga LY, González-Ortiz M, Martínez-Abundis E. 2017. Effect of Gymnema sylvestre Administration on Metabolic Syndrome, Insulin Sensitivity, and Insulin SecretionJournal of medicinal food. PMID 28459647 · doi:10.1089/jmf.2017.0001

Other clinical studies and reviews6

  1. Perera WPRT, Liyanage JA, Dissanayake KGC and others. 2021. Antiviral Potential of Selected Medicinal Herbs and Their Isolated Natural ProductsBioMed research international. PMID 34926691 · doi:10.1155/2021/7872406
  2. Di Fabio G, Romanucci V, Di Marino C and others. 2015. Gymnema sylvestre R. Br., an Indian medicinal herb: traditional uses, chemical composition, and biological activityCurrent pharmaceutical biotechnology. PMID 25860062 · doi:10.2174/138920101606150407112903
  3. Tiwari P, Mishra BN, Sangwan NS. 2014. Phytochemical and pharmacological properties of Gymnema sylvestre: an important medicinal plantBioMed research international. PMID 24511547 · doi:10.1155/2014/830285
  4. Di Fabio G, Romanucci V, Zarrelli M and others. 2013. C-4 gem-dimethylated oleanes of Gymnema sylvestre and their pharmacological activitiesMolecules (Basel, Switzerland). PMID 24304585 · doi:10.3390/molecules181214892
  5. Posadzki P, Watson LK, Ernst E. 2013. Adverse effects of herbal medicines: an overview of systematic reviewsClinical medicine (London, England). PMID 23472485 · doi:10.7861/clinmedicine.13-1-7
  6. Porchezhian E, Dobriyal RM. 2003. An overview on the advances of Gymnema sylvestre: chemistry, pharmacology and patentsDie Pharmazie. PMID 12622244

Consult a qualified vaidya before acting on anything here. Ayurvedic practice is prescribed to a person, not to a condition: the same dravya is given, withheld or substituted depending on your constitution, your agni, the season and what else you are already taking. A page cannot know any of that. Self-prescribing from a reference is how the wrong preparation, the wrong dose or the wrong anupana gets used.

Educational reference only. Nothing on this page is medical advice, a diagnosis, or a recommendation to take anything. Traditional uses and research findings are reported as published, not as claims about what any product does. If you take prescribed medication, raise any interaction with the prescriber rather than acting on a page. See our editorial standards.