Inositol is a naturally occurring nutrient found in various forms, the most common being myo-inositol. It is found in phospholipids which function as cellular mediators of signal transduction, in metabolic regulation, and growth.
Bulgaria has 526 rivers longer than 2.3 km. The only navigable river is the Danube, which flows along the northern Bulgarian border.The rivers of  Peninsular India are not suitable for navigation as they flow  swiftly over the plateaus and highlands.
The Balkan Mountains cross the northwestern corner of Bulgaria to the Black Sea, sloping gradually to a plateau that ends at the Danube, the country's chief river. The southern side of the mountain range is bounded by narrow plains, such as the Thracian Plain, an important agricultural region.