Vitamins That Are Eliminated In Urine

There are two major categories of vitamins -- fat-soluble and water-soluble. Fat-soluble vitamins bind to fat in the body and become stored for later use. Water-soluble vitamins dissolve in water and enter directly into the bloodstream. Because water-soluble vitamins travel through the bloodstream, they are filtered by the kidneys and excess amounts are eliminated in the urine.

Thiamin

Thiamin, also referred to as vitamin B1, plays an important role in nerve impulse transmission and ensures the nerve networks are working correctly. Thiamin also aids in the metabolism of carbohydrates, amino acids and alcohol. Thiamin is found in whole-grains, enriched grains and pork.

Riboflavin

Riboflavin, which is also called vitamin B2, aids in conversion of carbohydrates, proteins and fats into energy. The most abundant sources of riboflavin are milk and yogurt. Enriched grains and cereals also provide riboflavin.

Niacin

Niacin, or vitamin B3, ensures that the digestive system functions properly and keeps the skin healthy. "Nutrition and You," by Joan Salge Blake states that niacin may decrease bad cholesterol in the blood and increase good cholesterol. Rich sources of niacin include meat, fish, poultry, enriched grains and fortified cereals.

Vitamin B6

Vitamin B6 is the term that encompasses several compounds -- pyridoxine, pyridoxal and pyridoxamine. Vitamin B6 helps with the metabolism of proteins, carbohydrates and fats and is essential for building healthy red blood cells. Vitamin B6 is found in many foods, including fortified cereals, meat, poultry, fruits, vegetables, nuts and legumes.

Folate

The most important functions of folate include DNA synthesis and the prevention of birth defects. Folate also contributes to the formation of healthy red blood cells. According to Blake, folate may reduce the risk of colon cancer. The best sources of folate include enriched pasta, bread, rice, legumes, leafy green vegetables, broccoli and asparagus.

Vitamin B12

Vitamin B12 aids in proper nerve function, formation of red blood cells and DNA synthesis. Natural forms of vitamin B12 are found exclusively in animal sources such as meat, fish, poultry and eggs. Synthetic vitamin B12 can be found in fortified cereals and soy milk.

Pantothenic acid and Biotin

Pantothenic acid and biotin both aid in the metabolism of the macronutrients -- carbohydrates, proteins and fats. The best sources of both of these vitamins include whole-grains, nuts, meat, milk and eggs.

Vitamin C

Vitamin C, which is often referred to ascorbic acid, aids in the production of collagen and acts as an antioxidant. Vitamin C also boosts the immune system, which can help prevent infections. The richest sources of vitamin C are fruits and vegetables.