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Cinnamimum zeylanicum Blume - Tvak
Tvak is the dried inner bark (devoid of cork and cortex) of the coppiced shoots of stem of Cinnamomum zeylanicum Blume. (Fam. Lauraceae), a moderate sized evergreen tree usually attaining a height of 6-7 .5 m, cultivated on the Western Ghats and adjoining hills, bark collected during April-July and October-December.
|Telugu||Lavangapatta, Dalchini chekka|
Essential oil, tannin and mucilage.
Reference: Dravya - Substance, Rasa - Taste, Guna - Qualities, Veerya - Potency, Vipaka - Post-digesion effect, Karma - Pharmacological activity, Prabhava - Therepeutics.
Madhura, Katu, Tikta
Laghu, Ruksha, Tikshna
Kaphavatahara, Rucya, Vishaghna, Kantashuuddhikara
- THE AYURVEDIC PHARMACOPOEIA OF INDIA, PART-I, VOLUME-1, page no 151.