Formal Name: Casein protein hydrosylate
Supplement Forms: Pills, food, liquid

Recommended Daily Allowance

  • Infants: (0 to 12 Months) N/A
  • Children: (1 to 13 years) N/A
  • Adolescents: (14 to 18 Years) N/A
  • Adults: (19 and Older) N/A
  • Lactating Women: N/A
  • Pregnant Women: N/A

Notes: Proline is a non-essential amino acid that is produced internally within the body.

Additional Information

Proline is another non-essential amino acid. It was initially isolated from casein protein in 1901 and is unique in that it is soluble in alcohol. The liver is able to produce a sufficient amount of proline and it can also be synthesized from glutamic acid and ornithine.

Bodily Functions Proline Assists

Proline's most prominent feature is as a main component of collagen, a fiber that is extremely important in tendons, ligaments, connective tissue and skin. Proline makes up approximately 15% of collagen and is thus a useful amino acid in maintaining the health of the body's various structural components.

Symptoms Of Deficiency:
  • Deficiency in proline is extremely rare as the body is able to produce proline sufficiently.
Foods High In Proline

The best dietary sources of proline are meat, poultry, fish, dairy products, and soybeans.

Ailments That Proline Helps Against:
  • Proline may be beneficial in healing of skin and connective tissue after traumatic physical injury.
  • It is also helpful in the prevention of further atherosclerosis.
Side Effects And Toxicity

Therapeutic doses usually rang between 500-1,000 mg per day. Those with liver or kidney disease should consult their doctor before supplementing with proline.