• Name : Lajjalu
  • English Name :Touch-me-not, Shame Plant
  • Scientific Name :Mimosa pudica



Lajjalu consists of dried whole plant of Mimosa pudica Linn.; a diffused undershrub, sensitive to touch, 25-50 cm high, found nearly throughout hotter and moist regions of the country.1


Morphology Description (Habit):

Root - Cylindrical, tapering, rependant , with secondary and tertiary branches, varying in length, upto 2 cm thick, surface more or less rough or longitudinally wrinkled; greyish brown to brown, cut surface of pieces pale yellow; fracture hard, woody, bark fibrous; odour, distinct; taste, slightly astringent.

Stem - Cylindrical, upto 2.5 cm in dia; sparsely prickly, covered with long,week bristles longitudinally grooved, external surface light brown, internal cut surface grey, bark fibrous; easily separable from wood.

Leaf - Digitately compound with one or two pairs of sessile, hairy pinnae, alternate, petiolate, stipulate, linear lanceolate; leaflets 10-20 pairs, 0.6-1.2 cm long, 0.3-0.4 cm broad, sessile, obliquely narrow or linear oblong; obliquely rounded at base, acute, nearly glabrous; yellowish-green.

Flower - Pink, in globose head, peduncles prickly; calyx very small; corolla pink, lobes 4, ovate oblong; stamens 4, much exserted; ovary sessile; ovules numerous.

Fruit - Lomentum, simple, dry, 1-1.6 cm long, 0.4-0.5 cm broad with indehisced segments and persistent sutures having 2-5 seeds with yellowish, spreading bristle at sutures, 0.3 cm long, glabrous, straw coloured.

Seed - Compressed, oval-elliptic, brown to grey, 0.3 long, 2.5 mm broad having a central ring on each face.



Parts Used:

Whole Plant





As per Ayurveda:

           Rasa (Taste)                 : Bitter, astringent

           Guna (Property)           : Light, Dry

           Veerya (Potency)         : Cold

           Vipaka (End Result)      : Pungent


Pharmacological Actions:

Lajjalu is Kaphapittahara. The herb has been used traditionally for ages, in the treatment of urogenital disorders, piles, dysentery, sinus, and also applied on wounds.2

The primary pharmacological actions of Lajjalu are summarized as under:


Central Nervous System:

i. Useful in the management of anxiety and depression.3


Cardiovascular System: 

i. Exhibits significant hypolipidaemic activity.4


Reproductive System: 

i. The root extract of M. pudica has antifertility effect; it has been observed to prolong the estrous cycle and disturb the secretion of gonadotropin hormones.5

ii. Useful in the management of menorrhagia.


Urinary System: 

i. Possesses significant diuretic activity.6


Skin and Hair: 

i. Lajjalu possesses good wound healing activity.7



i. Exerts anti-mumps virus activity.8



Excessive bleeding (as in bleeding piles, menorrhagia)

Skin ulcers




1. The Ayurvedic Pharmacopoeia of India, Part-1, Vol-2.

2. Ahmad H, Sehgal S, Mishra A, Gupta R. Mimosa pudica L. (Laajvanti): An overview. Pharmacogn Rev. 2012 Jul;6(12):115-24.

3. Ayissi Mbomo R, Gartside S, Ngo Bum E, et al. Effect of Mimosa pudica (Linn.) extract on anxiety behaviour and GABAergic regulation of 5-HT neuronal activity in the mouse. J Psychopharmacol. 2012 Apr;26(4):575-83.

4. Rajendran R, Krishnakumar E. Hypolipidemic Activity of Chloroform Extract of Mimosa pudica Leaves. Avicenna J Med Biotechnol. 2010 Oct;2(4):215-21.

5. Ganguly M, Devi N, Mahanta R, Borthakur MK. Effect of Mimosa pudica root extract on vaginal estrous and serum hormones for screening of antifertility activity in albino mice. Contraception. 2007 Dec;76(6):482-5.

6. Baghel A, Rathore DS, Gupta V. Evaluation of diuretic activity of different extracts of Mimosa pudica Linn. Pak J Biol Sci. 2013 Oct 15;16(20):1223-5.

7. Kokane DD, More RY, Kale MB, et al. Evaluation of wound healing activity of root of Mimosa pudica. J Ethnopharmacol. 2009 Jul 15;124(2):311-5.

8. Malayan J, Selvaraj B, Warrier A, et al. Anti-mumps virus activity by extracts of Mimosa pudica, a unique Indian medicinal plant. Indian J Virol. 2013 Sep;24(2):166-73.


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