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 Volga River is the longest river in Europe, about  2,300 miles (3,700 km). It originates at an elevation of only 740 feet (225 m) in the Valday Hills northwest of Moscow, connects with the Rybinsk Reservoir. The river heads east past Yaroslavl, Nizhny Novgorod and Kazan.