Download - Rationality of Ayurvedic dosage forms
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AYURVEDIC DOSAGE FORMS AND
THEIR RATIONALITY
By
Dr MS Krishnamurthy Ph.D (Ayu)Associate Professor & Head,
P.G Department of Bhaishajya Kalpana,
Alva’s Ayurveda Medical College, Moodbidri, Karnataka +91 9448984445
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Dosage Form – Physico-chemical properties of the compound that could affect the drug performance which leads to development of an efficacious medicine .
Kalpana – Ability of the drug to obtain the desired result by penetration to the target cells through the inherited potency / inculcated physico-chemical properties.
Dosage forms vis-à-vis Kalpana
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Availability of the raw drug Known properties of the compound /
ingredients Specific therapeutic area Potency related to competitive products Molecule’s weakness to synthesize the
compound( through Samskara)
Parameters for Drug Design
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Probable decay mechanism (shelf life ) Condition that promote drug decomposition
(stabilization technique) Compatibility (synergism & antagonism) Dissolution/media Biological properties(Personal/Mass) Mass acceptance
Parameters for Drug Design Contd…
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Nature of Expected Drug Action
Quick action
Prolonged action
Sustained effect (controlled)
Stable effect
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Do We Need Multiple Drug dosage forms?
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Fundamental Formulations
Potential gradation (assimilation ability)
Fibrous content
Molecular Weakness / Alkaloid Concentration
Reactive Ability
Sustained Action
Swarasa 5 4 4 2 3
Kalka 4 5 1 5 5
Kwatha 3 3 5 1 4
Hima 2 2 3 3 2
Phanta 1 1 2 4 1
Panchavidha Kashaya Kalpana & Pharmaceutical Significance
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Reduction of water
% of Reduction
Desired Action Body Unit Involved
1/1 0 Tarpana (Nutritive) Rasa
1/2 50 Pachana (Digestive) Ama
1/4 25 Kledana (Moisturizing) Kapha
1/8 12.5 Shamana (Pacification) Saptadhatu
1/10 10 Deepana (Carminative) Agni
1/12 8.33 Chedana (Scraping / Cutting)
Mamsa, Meda
1/16 6.25 Shoshana (Emaciating) Saptadhatu
Harita’s Concept of Kashaya Kalpana
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Dosage Form
Qualities Nature Action
Swarasa
Cold, Heavy
Quick Penetration in Permeable membranes, Stimulation of free Contents of Hollow organs, Mechanical Action
Less carminative, Less digestive, Gradual penetration (Acute condition)
Kalka Moderately Cold & Heavy
Moderate Digestive & Carminative
Gradual but sustained penetration (Chronic diseases and Deep sited Doshas)
Kashaya Kalpanas & Significance
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Dosage Form
Qualities Nature Action
Kwatha Warm, Subtle, Severe (Penetrative)
Carminative & Digestive
Quick & deep penetration, moderate stability , Less retention in the body(Recent diseases)
Kashaya Kalpanas & Significance
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Hima Cool, Mild Coolant, Mild nature, Less irritant
Less stable, Mild action (Chronic illness)
Phanta Mild, Slightly warm
Digestive, Carminative
Mild action with lesser stability (Chronic diseases)
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Dosage Form
Source Action Pontentials
Action on Dosha, Dhatu & Mala
Utility
Choorna Kalka Drying, Moderately Penetrating, Quick acting
Madhyama dosha-dhatu-mala
Pacifier, Irritant
Vati,Ghana Kashaya/Kalka
Penetrative, Quick acting Minuteness
Madhyama-Prabhoota dosha-dhatu-mala
Long lasting effect, Mild irritant
Secondary Formulations
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Satva Kalka/ Swarasa
Quick acting,Deep penetrative
Alpa dosha-dhatu
Mild action, Quick effect,Long standing, Soothening
Kshara & Lavana
Kalka Purifier, Healing, Moisturising, Penetrative
Chirakari-Antarashrita doshas
Quick action for short duration,Prolonged administration with risk, Used in emergency
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Dosage Form
Source Action Pontentials
Action on Dosha, Dhatu & Mala
Utility
Masi Kalka Drying, Healing Utthana dosha nirharana
Stimulant/Irritant
Ghrita Swarasa-Kashaya
Nourishing, Soothening,Promotes the expulsion by moisturising, Rejuvinator, Neuro sedation
Vatapittahara Long persisting illness with deep sited doshas,Soothening, Nourishing
Secondary Formulations
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Taila Swarasa-Kashaya
Oleation,Healing,Liquification,Lubrication, Neuro stimulant
Vatakaphahara
Long persisting illness with deep sited doshas
Avartita Swarasa-Kashaya
Nourishing, Deep and mild penetrating, Rejuvinative, Regenerative
Tridoshahara, Balakara,
Long persisting illness with deep sited doshas,Soothening, Long standing effect
Malahara Kalka Purifying(ext) Healing
Pooya-srava-durgandhahara
Soothening,effective in chronic wounds
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Dosage Form Source Action Pontentials
Action on Dosha, Dhatu & Mala
Utility
Mantha & Pramathya
Phanta-Swarasa/ Sheeta
Nutritive, Mild acting
Dhatu vardhaka
Emaciating and chronic disorders
Asava Swarasa Deep penetrating,Quick action, Tonic, Carminative, Mild digestive (Comparative)
AgnivardhakaBalakaraka
In chronic disorders caused debility, To prevent remanifestation
Secondary Formulations
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Arishta Kashaya Deep penetrating Quick action,Carminative, Digestive
Madhyama and Gambheera doshas,Doshas in scattered condition
Quick acting, Curative of chronic and deep sitedrecurrent disorders
Leha Swarasa/Kwatha
Rejuvinative,Preventive,Carminative,Nutritive(Moderate to severe penetration)
Dhatubalakaraka
Nutritive, Rejuvinative, (Curative and preventive)
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Concentrated Kashayas Kashaya TabletsHard Gelatin & Soft Gelatin Capsules
Syrups
Less-known Way to Define..
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Choorna >>>> Capsule, Tablets Kashayas >>>> Concentrated
Kashayas, Tablets, Syrups, Arishtas
Taila & Ghrita >>>> Soft Gel Capsules Leha >>>> Chocolates, Syrup Tablets >>>> Coated & Hard gel
capsules Malahara >>>> Gels, Liniments
Modified Dosage Forms – Do They Serve Always?
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Study of the drug as Panchavidha Kashaya Kalpana
Study of Solubility patternEfficacy studies in different dosage
formsDecision of New Drug Dosage Form
Dosage Form Decision, In New Herbal Drug
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Irrational utilityDifficulty in dose fixationHealth hazards/Side effectsEconomical burdenConfusion regarding efficacyLoss and mistreatment of action potentials Improper inference regarding drug action
Irrational Dosage Forms – End Results
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Ayurvedic dosage forms are the results of rational application of Ayurvedic principles
These dosage forms have scientific inputs in their application
Judicial modification of the dosage forms do have advantages
Aping of the dosage forms may lead into wrong conclusions/inferences So…let us use the Dosage forms in most judicial way
To conclude …..
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Thank You
Dr M S Krishnamurthy MD(Ayu) PhD
Alvas Ayurveda Medical College,Moodbidri,Karnataka
Mob-+91 9448984445
My blog:ayurblog.com