Vitamin A plays an important role in the growth and the repair of body tissues, as it helps maintain smooth, soft, disease-free skin. It strengthens the immune system and helps protect the mucous membrane of the mouth, the nose, the throat, and the lungs. Vitamin A is also important in the building of strong bones and teeth, the formation of rich blood, and the maintenance of good eyesight.

Vitamin B1 or thiamine is known as the "moral vitamin" because of its relation to a healthy nervous system and its beneficial effect on mental attitude. It is essential for consistent growth in children and for the good functioning of the heart, muscles, and nerves. Too little thiamine can result in fatigue, constipation, loss of appetite, memory loss, irritability and depression.

Vitamin B2 or riboflavin is a water-soluble vitamin necessary for cell respiration and for the maintenance of good vision, skin, nails and hair. A deficiency in riboflavin may result in eye problem, loss of appetite, impaired growth, anemia, dry skin, and depression.

Vitamin B3 or niacin is a water-soluble vitamin necessary for the breakdown of carbohydrates and fats, the healthy functioning of the nervous and digestive systems, the production of sex hormones, and the maintenance of healthy skin. It is effective in improving circulation and reducing the cholesterol level in the blood. A deficiency in niacin results in fatigue, irritability, depression, confusion, insomnia, blood sugar fluctuation, and arthritis.

Vitamin B5 or pantothenic acid is a water-soluble vitamin necessary for the breakdown and use of carbohydrates and fats, in the production of adrenal and sex hormones and in the body's use of other vitamins. It is essential for proper functioning of the gastrointestinal tract. A deficiency in pantothenic acid will result in headaches, nausea, abdominal cramps, fatigue and depression. It will also increase susceptibility to colds, insomnia, numbness and tingling in the hands and feet.

Vitamin B12 or cobalamin is a water-soluble vitamin that is needed for growth and development, the production of red blood cells, the body's use of folic acid and for a healthy nervous system function. Vitamin B12 contains cobalt, a substance found to be essential for longevity. The lack of cobalamin can lead to pernicious anemia, a disorder signaled by weakness, weight loss, pale skin, loss of coordination, tingling in the hands and feet, moodiness and depression.

Vitamin B15 or pangamic acid is a water-soluble nutrient that is helpful in stimulating the glandular and nervous system and is helpful in treating high blood cholesterol levels, impaired circulation, and premature aging. Most importantly, it eliminates the phenomenon of hypoxia which is an insufficient supply of oxygen in living tissue. It also regulates fat and sugar metabolism.

Biotin is a water-soluble B-complex vitamin. Without it the body's fat production is impaired. A deficiency in biotin may cause muscular pain, poor appetite, dry skin, lack of energy, sleeplessness and a disturbed nervous system.

Folic acid is part of the water-soluble vitamin B complex. It is important for proper brain function, for mental and emotional health. It also increases the appetite and stimulates the production of hydrochloric acid which prevents intestinal parasites and food poisoning. Deficiency in folic acid results in poor growth, graying hair, tongue inflammation, impaired absorption and anemia that cannot be corrected by supplementary iron. In addition, a deficiency in folic acid during pregnancy may lead to toxemia, premature birth, afterbirth hemorrhaging, and megaloblastic anemia in both mother and child.

Also known as tocopherol, vitamin E is a fat-soluble vitamin. It is an antioxidant. It disintegrates arterial blood clots thus treating and preventing coronary thrombosis, a heart attack in which the vessels are blocked by blood clots, leading part of the heart to be deprived of its blood supplies. It will also prevent chest pain resulting from insufficient supply of blood to the heart tissues. Vitamin E can also help in the healing of burned tissues, skin ulcers and abrasions. Moreover, adequate intake of vitamin E will slow the aging of the skin, will eliminate perspiration odors and will regulate menstruation blood flows. It was used successfully in the treatment of breast diseases. A deficiency in vitamin E will cause heart diseases, will damage the kidneys and the liver, and will impair hemoglobin formation. A severe deficiency in vitamin E in men may lead to sterility, and in women will result to miscarriages and premature births.

Vitamin K is necessary to promote blood clotting; it is beneficial in reducing the blood flow during prolonged menstruations; it is used with vitamin C to prevent hemorrhages in various part of the body, such as the eyes and during gallbladder operations. A deficiency in vitamin K results from inadequate absorption or the body's inability to utilize vitamin K in the body, which may cause hemorrhages in any part of the body, miscarriages and nosebleeds

Also known as ascorbic acid, vitamin C is a water soluble nutrient. Its primary function is maintaining collagen, a protein necessary for the formation of connective tissue in skin, ligaments and bones. It is important in healing wounds and burns because it speeds up the healing process. It also aids in forming red blood cells and preventing hemorrhaging. In addition, vitamin C fights bacterial infections and thus is frequently used in the prevention and treatment of the common cold. Deficiency in vitamin C cause shortness of breath, impaired digestion, poor lactation, bleeding gums, weakened enamel, tendency to bruising, swollen or painful joints, nosebleeds, anemia, lowered resistance to infections, and slow healing of wounds and fractures. A severe deficiency in vitamin C results in scurvy, and is a probable cause of heart attacks and strokes.

Vitamin D is a fat-soluble vitamin. It can be acquired either by ingestion or by exposure to sunlight. It is known as the "sunshine" vitamin because the action of the sun's ultraviolet rays activates a form of cholesterol, which is present in the skin, converting it to vitamin D. It aids in the absorption of calcium and the breakdown of phosphorus which is required for bone formation. Without vitamin D, the teeth and the bones do not calcify properly. It is important in maintaining a stable nervous system, normal heart action, and normal blood clotting. Vitamin D is best utilized when taken with vitamin A. A severe deficiency in vitamin D will cause rickets, a bone disorder in children. It also leads to inadequate absorption of calcium from the intestinal tract and the retention of phosphorus in the kidneys. It may also cause tetany, a muscular numbness.

Choline is considered one of the B-complex vitamins. Choline is essential for the health of the liver and the kidneys. It prevents fats from accumulating in the liver and facilitates the movement of fats into the cells. A deficiency in choline results in ulcers, heart trouble and blocking of the tubes of the kidneys. Insufficient supplies of choline may cause hemorrhaging of the kidneys. Choline is a fat and cholesterol dissolver; it is used to treat atherosclerosis and hardening of the lung.

Inositol is part of the vitamin B complex. It helps reduce blood cholesterol, and in combination with choline, prevents the fatty hardening of arteries and protects the liver, kidneys and heart. Inositol is needed for the growth and survival of cells in the bone marrow, the eye membrane, and the intestines. It is vital for hair growth and can prevent thinning hair and baldness. A deficiency in inositol may cause constipation, eczema, abnormalities in the eyes, and a high blood cholesterol level which may result in artery and heart disease.

Also known as Paba, it is an integral part of the vitamin B complex. It is water-soluble and is considered unique in that it is a "vitamin within a vitamin," occuring in combination with folic acid. Paba stimulates the intestinal bacteria enabling them to produce folic acid. Paba plays an important role in determining skin health, hair pigmentation and health of the intestine. It also acts as a sunscreen. A deficiency in Paba may cause fatigue, irritability, depression, nervousness, headache, constipation and other digestive disorders.

Vitamin B6 or pyridoxine is a water-soluble vitamin necessary for the breakdown of carbohydrates, protein and fats, for the healthy functioning of the nervous and digestive systems, for the production of red blood cells and antibodies, and for the maintenance of healthy skin. The lack of pyridoxine will cause an impaired immune system, anemia, inflammation of the tongue, weakness, dizziness, nausea and vomiting, and depression.

Also known as bioflavonoid, vitamin P is a water-soluble vitamin. It is essential for the proper absorption of vitamin C. Its action helps prevent hemorrhages and rupture in the capillaries and connective tissues and builds a protective barrier against infections, such a cold and influenza. It is successfully used in treating ulcers and labyrinthitis, a dizziness caused by a disease of the inner ear, and asthma. It is also successful in treating disorders such as bleeding gums, eczema, and susceptibility to hemorrhaging. Morover, when bioflavonoids and vitamin C are taken together, they may help prevent miscarriages.