Properties: white or light yellow crystalline powder, odorless, bitter taste, with astringent. Soluble in water, methanol, slightly soluble in ethanol, very slightly soluble in chloroform, insoluble in acetone. Pharmacology actions: The product can selectively inhibit succinate dehydrogenase root in the muscle of parasite, so that fumaric acid can not be reduced to succinate, thus affecting the anaerobic metabolism of parasite muscle, reduce the energy generated. Its activity is approximately12fold than tetramisole (racemate), and lower toxicity. In addition, the microtubules of the worm can be inhibited by the drug. Levamisole also have the functions of immune regulation and immune exciting. Having good effects for roundworm, hookworm, pinworm, and Strongyloides stercoralis disease. This product is a more efficient with single dose , so it is suitable for group therapy. Storage:Sealed, stored in dry place.