Vitamin B6

Pyridoxine

ExRx.net > Nutrition > Micronutrients > Vitamin

Functions

  • essential for metabolism of tryptophan
  • needed for utilization of certain other amino acids
  • aids in red blood cell formation
  • aids in nervous system function
  • health of skin

Deficiency

  • dermatitis around eyes and mouth
  • neuritis
  • anorexia
  • nausea and vomiting

Characteristics

  • soluble in water and alcohol
  • rapidly inactivated in presence of heat, sunlight, or air

Good Sources

Natural

  • meat, fish
  • whole grains
  • beans
  • nuts
  • banana

Food Quantity mg
Oat bran muffin 1 medium 0.22
Lima beans, cooked 1 cup 0.14
Tuna, cooked 3 oz 0.45
Banana 1 medium 0.68

Artificial

  • wheat germ
  • blackstrap molasses

Recommended Daily Allowances (RDA)

  • Males (11 yrs. and older)
    • 1.3 mg
    • 1.8-2.2 mg
  • Females (11 yrs. and older)
    • 1.3 mg
    • 1.8-2.2 mg
  • Pregnant females
    • 2.6 mg
  • Lactating females
    • 2.5 mg
  • Children
    • 0.9-1.6 mg
  • Infants
    • 0.3-0.6 mg
  • Varied values reflect different references

Tolerable Upper Intake Levels (UL)

  • Adults (19 to 50 yrs)
    • 100 mg

Intakes above UL may lead to negative health consequences.

Supplementation

  • Large doses can cause numbness and other neurological disorders


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