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Vitamin B6 is a vital nutrient that keeps the body functioning in a healthy manner. It helps the brain, digestive system, immune system, cardiovascular system and nervous system, according to American Dietetic Association spokesperson Dee Sandquist, reports Everyday Health.


Vitamin B6, also known as pyridoxine, helps the human body produce neurotransmitters, develop the brain and control homocysteine levels, according to University of Maryland Medical Center. Vitamin B6 helps produce red blood cells, and it also makes the hormones norepinephrine and serotonin.


Vitamin B6 does provide the body with energy by converting foods into glucose. Glucose in turn is used by the body for energy, as stated by the University of Maryland Medical Center.


Vitamin B-6 enables proper levels of brain function and development, according to Everyday Health. It helps the body make norepinephrine and serotonin, two hormones that influence mood. Vitamin B-6 also assists with the production of melatonin, which governs the body's internal clock.


Vitamin B-6, also known as pyridoxine, may cause nausea, vomiting, stomach pain, loss of appetite, headaches, tingling and sleepiness when ingested in higher-than-recommended doses, according to WebMD. Long-term use of the vitamin at high doses is possibly unsafe, and it may cause certain brain and


Vitamin B6 promotes the proper functioning of the cardiovascular, immune, nervous, muscular and digestive systems, according to Everyday Health. It works within the brain to produce serotonin and norepinephrine, which are hormones that affect mood. The body also uses B6 to produce melatonin, which h


There are no specific laboratory tests or reference values for vitamin B6 used to identify a deficiency, reports the Merck Manual for medical professionals. However, serum levels of pyridoxal phosphate can be used to diagnose a suspected deficiency of vitamin B6.


Vitamin B6 helps the immune, cardiovascular, digestive, nervous and muscular systems to function effectively, according to Everyday Health. It also helps the body make melatonin, serotonin and norepinephrine.


Low levels of vitamin B6 may cause depression, according to the National Institutes of Health Office of Dietary Supplements. These low concentrations of vitamin B6 are usually linked to low levels of other vitamin B complexes including vitamin B12 but having inadequate amounts of vitamin B6 alone is


Possible side effects of taking too much vitamin B6 include abnormal heart rhythms, acne, breast enlargement or soreness, decreased muscle tone and drowsiness, according to Mayo Clinic. Other side effects may include headaches, heartburn, loss of appetite and nausea.