Formal Name: L-threonine
Supplement Forms: Pills, food, liquid

Recommended Daily Allowance

  • Infants: (0 to 12 Months) 63 mg/kg of body weight
  • Children: (1 to 13 years) N/A
  • Adolescents: (14 to 18 Years) N/A
  • Adults: (19 and Older) 8 mg/kg of body weight
  • Lactating Women: N/A
  • Pregnant Women: N/A

Notes: mg stands for milligrams and kg stands for kilograms.

Additional Information

Threonine is not produced by the body. recommended daily allowance for threonine for men and women is 8 mg per day. When sufficiently available in the body, threonine acts on a variety of body systems. Threonine is most effectively metabolized and used by the body when vitamin B6, magnesium and niacin are present.

Bodily Functions Threonine Assists

Threonine is versatile like many of the other essential amino acids. It has been identified as one of several nutrients that are essential in maintaining proper mental health. It is particularly important in high stress situations, when the body's demand for threonine is increased in order to cope with stress. Threonine is also present in healthy collagen formation, keeping excess fat from accumulating and damaging the liver, aiding in the production of antibodies and helping maintain a functional thyroid gland.

Symptoms Of Deficiency:
  • Deficiency of threonine is rare
  • Known symptoms are irritability and sudden mood swings
Foods High In Threonine

Foods that are quality threonine sources include cheese, milk, red meats, fish, poultry, peanuts and sesame seeds.

Ailments That Threonine Helps Against:
  • Used in treatment of depression and anxiety
  • May contribute to the healing of leg ulcers
Side Effects And Toxicity

No known side effects of high threonine doses, however patients with kidney or liver disease should consult their doctor before supplementing with this amino acid.