Cinnamomum zeylanicum
Botanical Name:
Cinnamomum zeylanicum

Tvak is the dried inner bark (devoid of cork and cortex) of the coppiced shoots of stem of Cinnamomum zeylanicum Blume, (Synonym Cinnamomum verum J.S. Presl), Family Lauraceae

Common Name(s) in English & Indian Languages
Sanskrit: Darusita
Assamese: Dalcheni
Bengali: Daruchini, Darchini
English: Cinnamon bark
Gujrati: Dalchini
Hindi: Dalchini
Kannada: Dalchini Chakke
Kashmiri: Dalchini, Dalchin
Malayalam: Karuvapatta, Ilavarngathely
Marathi: Dalchini
Oriya: Dalechini, Guda twak
Punjabi: Dalchini, Darchini
Tamil: Lavangapattai, Karuvapattai
Telugu: Lavangapatta, Dalchini chekka
Urdu: Darchini

Botanical description:
A moderate-sized evergreen tree; bark rather thick, smooth, pale; twigs often compressed; young parts glabrous except the buds which are finely silky. Leaves opposite or sub opposite (rarely alternate), hard and coriaceous, 7.5–20 by 3.8–7.5 cm, ovate or ovate-lanceolate, sub acute or shortly acuminate, glabrous and shining above, slightly paler beneath, base acute or rounded; main nerves 3–5 from the base or nearly so, strong, with fine reticulate venation between; petioles 1.3–2.5 cm long, flattened above. Flowers numerous, in silky pubescent, lax panicles usually longer than the leaves; peduncles long, often clustered, glabrous or pubescent; pedicels long. Perianth 5–6mm long; tube 2.5 mm long; segments pubescent on both sides, oblong or somewhat obovate, usually obtuse. Fruit 1.3–1.7 cm long, oblong or ovoid-oblong, minutely apiculate, dry or slightly fleshy, dark purple, surrounded by the enlarged campanulate perianth that is 8 mm in diameter.

Parts used:
Dried inner bark (devoid of cork and cortex)

Major chemical constituent
Essential oil, tannin and mucilage

Therapeutic uses:
• Piles (Arsa)
• Heart disease (Hrdroga)
• Worm infestation (Krmiroga)
• Thirst (Trsna)
• Dryness of mouth (Mukhasosa)

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