Threonine is a vital amino acid found naturally in various foods and supplements. It is prevalent in sources such as cottage cheese, poultry, fish, meat, lentils, and sesame seeds. These diverse sources make threonine an accessible nutrient for many people, contributing to its essential role in human health.

Also Known As

Threonine is recognized by several scientific names that reflect its chemical structure. These include:

  • 2-Amino-3-hydroxybutyric acid
  • L-alpha-amino-beta-hydroxybutyric acid


Threonine plays a crucial role in the body, contributing to the maintenance of protein balance and supporting various physiological functions. It is used in medical settings for conditions such as Amyotrophic lateral sclerosis (ALS), movement disorders, muscle spasticity, and to aid recovery from spinal cord injuries. Its versatility in health applications showcases its importance in medical nutrition and therapeutic interventions.


Threonine is essential for the formation of collagen and elastin, key components of healthy skin and connective tissues. Its involvement in immune system enhancement and liver health further underscores its importance. Here are three key points about threonine:

  • Crucial for healthy skin, wound healing, and tooth enamel through its role in elastin and collagen formation.
  • Enhances immune function and helps prevent fatty buildup in the liver.
  • Converts to glycine, reducing muscle spasticity and aiding muscle control.

Common Dosage

While there is no standardized dosage for threonine, suggested dosages vary based on the condition being treated:

  • For Amyotrophic lateral sclerosis (ALS): 2g once daily for 7 days.
  • For movement disorders: 6g daily for an unknown duration.
  • For muscle spasticity: 4.5g or 6g daily in 3 divided doses for 2 weeks.
  • For spinal cord injury: 6g daily in 3 divided doses for up to 2 weeks.


Threonine is a versatile amino acid with wide-ranging benefits for the body, from supporting skin health to enhancing immunity and aiding in liver health. Its role in treating various medical conditions highlights its therapeutic potential. Key takeaways include:

  • Essential for collagen and elastin formation.
  • Supports immune function and liver health.
  • Suggested dosages vary based on the condition being treated.

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