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.
Danube River. Danube River, German Donau, Slovak Dunaj, Hungarian Duna, Serbo-Croatian and Bulgarian Dunav, Romanian DunÄrea, Ukrainian Dunay , river, the second longest in Europe after the Volga. It rises in the Black Forest mountains of western Germany and flows for some 1,770 miles (2,850 km) to its mouth on the Black Sea.