A perennial semi-succulent herb up to 75 cm tall, with generally decumbent stem rooting at lower nodes and thick tuberous roots. Leaves ovate-oblong, 3-9 cm x 2-5 cm, thick. Flowers in lax verticillasters disposed in terminal raceme-like inflorescences, calyx 2-lipped, corolla 13-17 mm long, deep purplish-blue. Nutlets globose, about 1.2 mm long, granulate, blackish-brown.
Used to cure liver and stomach diseases, and a decoction of plant used to treat asthma, fever, nausea, rheumatism, colic, urinary tract infections, cough, epilepsy and convulsions. It is boiled with rock salt and used for curing sore throat.
Health Remedies 
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