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Introduction
• Pharmaceutics : Science of dosage form
design.
• Defnition of Dosage: Physical form of a dose
of medication is called dosage form.
• Samskaras of rasashastra are shodhana,
Murchana, Marana, Nirvapana, Pachana,
Patana etc.
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Classification
• Kharaliya
• Parpati
• Kupipakwa
• Pottali
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Criteria for classification
• Properties of action ( Gurutva, Laghutva,
Capacity of penetration)
• Process (Exposure to heat)
• Target activity ( Kostagata, Sarvasarira)
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Kharaliya Rasayana
Concept*:
• Prolong shelf life of herbal formulations
• Enhance the therapeutic efficacy
• Decrease the dosage
• Decrease the duration of treatment
• Provide bilateral safety and efficacy to both mercury and herbs
* Review of Rasakalpas–P. H. C. Murthy
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Types
• Based on material used: Loha khalwa
Pashana khalwa
• Based on shape: Vartula Khalwa (Round)
Droni / Ardha chandrakara/ Noukakara khalwa (Boat shaped)
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TAPTA KHALWA
LOHOU NAVANGULAH KHALLO NIMNATVE CHA SHADANGULA: | MARDAKO ASHTANGULOU
TAPTAKHALLABHIGHOAPYAYAM|| R.R.S.9/87
Vistara- 9 angula
Depth- 6 angula
Mardaka / pestle- 8 angula
Fuel: Aja shakrit (Goats feaces) & Tusha (Husk)
Use: Mardana samskara of parada
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SHILA FOR KHALWA NIRMANA
• KHALLAYOGYA SHILAA NEELA SHYAAMA SNIGDHA DRUDHA GURU…
-R.R.S. 9/78-80
Height- 16 angula
Width – 9 angula
Mardaka – 24 angula
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SIZE OF KHALWA YANTRA IN DIFFERENT TEXTS
S.No. Dimensions R.Chu. R.P.Su. R.R.S. R.K.D
01 Height 9 angulas 9 angulas 16 angulas 10 angulas
02 Length 16 angulas 16 angulas 24 angulas 16 angulas
03 Breadth 9 angulas 9 angulas 9 angulas 10 angulas
04 Depth 6 angulas 6 angulas - 7 angulas
05 Edges of the neck 2 angulas 2 angulas - 2 angulas
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USES OF KHALWA
• रसोपरसऱोहादे: पेषणाददक कर्ााणण | रसतन्त्र क्रियादऺ:ै खल्वयन्त्र ंप्रयुज्यते ||
-R.T.4/54
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Raw Materials
• Rasaadidravya
• Vanoushadhi
• Bhavana dravya
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Processing
• Kajjali nirmana
• Mixing of all other ingredients
• Bhavana
• No agnisamskara
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Final Product
• Ready to use form
• Vati, guti etc
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Cont…
• No herbal drugs as ingredients
• Kanya Rasa bhavana (Tiktarasa)
• Valla matra= 3 ratti= 375 mg
• Vati
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• Rasa sindhura–7 parts (out of 25 parts)
• Dose of Rasa sindhura= 1 ratti= 125mg
• In 375 mg BVC, Rasasindhura= 105mg
• Therefore,
• –375mg may not be single dose
• –It should be given in divided doses
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Vasanta Kusumakara Rasa
• Swarna bhasma, Abhraka bhasma= 2 parts
• Loha bhasma, Vanga bhasma= 3 parts
• Rasa bhasma= 4 parts (sarvamekatramardayet)
• Pravala bhasma, Mukta bhasma= 4 parts
• Bhavana with – Godugdha, Vasaswarasa, Haridra rasa, Mocha kanda rasa, Shatapatra rasa, Malati rasa and Tulasi rasa
*B.R. Prameha
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• No herbal drugs as ingredients
• Multiple bhavana dravya mentioned
• No mentioning of Vati
(gunjadwayamdaditasyamadhunasarvamehanut)
• If given with Sita and chandana–Amlapittahara
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Cont
• Dose = 2 gunja= 250mg with Madhu
• Rasa Bhasma–4 parts out of 22 parts
• In 250 mg VKR, Rasa Bhasma= 45.55mg
• Therefore,
–VKR dose is single dose
–Can be given twice a day
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Cont..
• Mixed formulation
• No bhavana dravya mentioned
• Dose = Nishka= 1 gram with Madhu
• Parada dose = 1 ratti= 125mg (R.T.)
• In 1 gm KR, Hg= 45mg (1part out of 21 parts)
Therefore,
–KR dose is single dose and can be given twice a day.
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Cont…
• Mixed formulation and bhavana dravya told
• Even Guggulu is one of the ingredient
• Dose = Raja kola = 6 gm
• Duration = Mandala= 40 days
• 150mg/day
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Gandhaka Rasayana
• Shuddha Gandhaka • Bhavana with: –Godugdha (3) –Chaturjata(8) –Guduchi(8) –Triphala(8) –Shunti(8) –Bhringaraja(8) –Ardraka(8) *A.P.
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Cont…
• Dose : 1 karsha= 12 gm
• Dose of Gandhaka = 1 –8 ratti= 1gm
• Therefore,
–GR to be used in divided doses
–For 40 days, it can be given 300mg/day
–So, 150mg BD can be planned.
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Cont…
• Mixed formulation
• Bhavana dravya not mentioned
• But Vati of 1½ Yava= 0.75 mg to be prepared
• Commentator:
–Vaarinapeshayitva(Water to be used)
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Large Scale
• Fine particles
• Proper mixing
• Uniform weight tablets
• Free from moisture
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Fine Particles
• Disintegrator :
–used for reduction of particle size of raw materials
–Capable of grinding hardest of drugs like nux-vomica seeds, ginger etc
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Cont…
• Pulverizer:
–Specially designed for medium fine and fine size reduction with heavy and rugged construction
–Can be used for minerals
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Proper Mixing
• Mixer:
–Equipment used to mix two or more than two components
–It ensures uniformity in composition
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Cont…
• Grinders:
–Particle size reduction and proper mixing both can be achieved by this instrument
–Breaking of particle done by continuous pressure
–Size reduction
–Grinding by shear or abrasion
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Uniform weight
• Pill Making Machine
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Free From Moisture
• Vacuum Drier
• Silica gel packs
• Air tight containers
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Discussion
• Role of Bhavana:
–Proper mixing
–Particle size reduction
–Catalyst action
–Binding agent
- Antidote
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Conclusion
• Hidden meaning is to be understood to use Kharaliya rasayanas effectively
• Yukti plays important role in using many of the Kharaliya rasayanas
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