Marsdenia tenacissima Wight & Arn.
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Himalayas from Kumaon to Assam, up to 1,500 m, Madhya Pradesh, Bihar, Deccan Peninsula.
Muurvaa, Atirasaa, Madhurasaa, Gokarni, Morataa, Madhulikaa, Suvaa, Devi, Tejani, Tiktavalli.
Root—purgative, antispasmodic, mild CNS depressant; used in colic.
Ayurvedic Pharmacopoeia of India recommends the bark in lipid disorders, also in polyuria and haemorrhagic diseases.
Roots and seeds are rich in pregnane glycosides of 2-deoxysugars, which on hydrolysis gave genins and sugars. Stem yielded tenacissosides A to E.
In folk medicine, the root is known as White Turpeth (Safed Nishoth). Operculina turpethum(Linn.) Silva Manso synonym Ipomoea turpethum R. Br. is the source of Turpeth (Nishoth) in Indian medicine.
Root—2–6 g powder, 10–20 g for decoction. (API, Vol.II.)