L-Phenylalanine 750mg - 120 tablets

Bioidentical, essential L-form of phenylalanine

Phenylalanine is an amino acid, a building block of the protein. There are three forms of phenylalanine: D-phenylalanine, L-phenylalanine, and the mixture produced in the laboratory called DL-phenylalanine. D-phenylalanine is not an essential amino acid. Its role in the human organism has so far only been sparsely researched. L-Phenylalanine is a highly bioavailable essential amino acid. It is the only form of phenylalanine found in proteins.

Functions of L-phenylalanine in the body

The body naturally converts L-phenylalanine in the liver into the amino acid L-tyrosine. Once L-tyrosine has passed the blood-brain barrier, it is converted into L-DOPA. The decarboxylation of L-DOPA leads to the synthesis of the neurotransmitter dopamine.
The enzyme dopamine-beta-hydroxylase transforms dopamine into the neurotransmitters noradrenalin and adrenalin. This triad of neurotransmitters is called catecholamines.

L-phenylalanine stimulates the production of the thyroid hormones T3 (triiodothyronine) and T4 (thyroxine), which are essential for maintaining overall physical and cognitive health.

L-phenylalanine sources in food

Phenylalanine is found in protein-rich foods such as soybeans, cheese, nuts, seeds, beef, lamb, chicken, pork, fish, eggs, dairy products, beans and whole grains. The artificial sweetener aspartame also contains phenylalanine.

Benefits of the L-phenylalanine tablets by Fairvital

  • highly dosed with 750mg per tablet
  • bioidentical, essential L-form of phenylalanine
  • vegetarian and vegan
  • without magnesium stearate and silicon dioxide

Content: 120 tablets

Recommended intake:
Adults 1 tablet daily with a meal and plenty of water.

Do not exceed the indicated recommended daily dosage. Food supplements are not a substitute for a balanced and varied diet. Keep out of the reach of small children.

One tablet contains:

L-Phenylalanine 750mg

Ingredients: L-phenylalanine, bulking agent microcrystalline cellulose, rice starch, cottonseed oil, calcium salts of orthophosphoric acid

Made in Germany

tablet size  
Length 23mm
Width 10mm




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L-Phenylalanine 750mg - 120 tablets

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bulk discount

Quantity unit price per 100 gram
1-1 19,95 €* 14,25 €*
2-3 18,95 €* 13,54 €*
4-5 17,95 €* 12,82 €*
>= 6 16,95 €* 12,11 €*