What happens to excess water-soluble vitamins in the body?

Excess water-soluble vitamins primarily get excreted through urine. Unlike fat-soluble vitamins, which can be stored in the body's fatty tissues and liver, water-soluble vitamins, such as vitamin C and the B vitamins, circulate freely in the bloodstream. When the body has consumed more of these vitamins than it requires for immediate metabolic functions, the surplus is typically filtered out by the kidneys and eliminated through urine. This characteristic underlines the importance of regular dietary intake since the body does not maintain substantial reserves of these vitamins.