Uncaria gambier (Hunter.) Roxb. are shrubs, 1-3 cm high. Trunk straight, round, pale brown color. Single leaf, oval shape, rounded base, pointed tip, 8-13 cm long, 4-7 cm wide, green color. Compound interest, a length of 5 cm, the crown of 5 pieces, oval-shaped, purple, oval-shaped fruit, 1.5 cm long, color black. Used parts are dried leaf extract (Gambier)
Chemical content of catechins, quercetin, catechins, tanning substances, catechins red, mucus, fat, and night.
The other characteristic of bitter. Properties: astringent and hemostatic. Microbiological tests were conducted extract of leaves and twigs of Uncaria gambier (Hunter.) Roxb. against some bacterial causes of diarrhea in vitro. From this research, it turns the leaves and twigs extract of Uncaria gambier (Hunter.) Roxb. can inhibit the growth of bacteria that cause diarrhea.