The medicinal part is the fresh rhizome.
Flower and Fruit
The peduncle is triangular. There are long-pedicled, white or reddish flowers in leafless, loose panicles. There are 3 sepals, 3 petals, and 3 stamens in the flower. The fruit is small and obtuse and is formed by 15 to 30 ovaries.
Leaves, Stem, and Root
The water leaves are ribbonlike. There are long-stemmed, swimming leaves. The aerial leaves are basal, long-stemmed, and cordate, or oblong-ovate, and spoonlike.
The rootstock of Alisma has a bitter taste; it is poisonous when fresh.
The plant is distributed widely throughout Europe, northern Asia and North America.
Mad-Dog Weed, Water Plantain, Ze-Xie
Actions & Pharmacology
Triterpenes: including alisol-A, alisol-B, alisol-C and their monoacetates
Sesquiterpenes (guaian type): alismol, alismol oxide
Caffeic acid derivatives: chlorogenic acid sulfate
No information is available.
Indications & Usage
Alisma is used for diseases of the bladder and urinary tract.
The drug is used to lower blood sugar, blood pressure, and cholesterol levels; it is also used as a diuretic.
Precautions & Adverse Reactions
No health hazards or side effects are known in conjunction with the proper administration of designated therapeutic dosages.
Mode of Administration
The drug is available as an extract for oral use. The root is also used in homeopathy.