Helps Block Sugar Absorption INNOVATIONMulberry Zuccarin is a natural product, which helps maintain healthy blood sugar levels. It is based on the leaves of Japanese Mulberry trees, which have been used in Chinese and Japanese medicine for centuries. The Japanese have been drinking Mulberry Tea for its curative properties for over 700 years! ADVANTAGES The Mulberry leaf contains a natural substance called DNJ (1-deoxynojirimycin), which significantly reduces the breakdown of sugars (polysaccharides) to glucose, and thereby slows the entry of sugar into the blood. Several clinical studies have shown that Mulberry extracts helps stabilizes blood sugar levels.