L-Phenylalanine 500 mg®

Objective insights generated automatically from the official DSLD label — a quick, factual read of how this product is formulated and disclosed.

This analysis is generated algorithmically from label data for educational reference only. It is not a product endorsement, ranking, or medical advice.

Allergen flags are parsed automatically from the official label's claims and statements. Always verify against the physical product label before use, especially if you have a severe allergy.

Serving Size: 1–2 Capsule(s) · 1 per day

Not Present

• 

  Glycine Metabolic Maintenance Capsules

  iHerb4.8(67)

  $48.00
• 

  Lamberts L Phenylalanine 500Mg 60 Caps

  HealthStuff4.0(7)

  $13.46
• 

  Now Foods L-Phenylalanine 500 mg 120 Veg Capsules

  Swanson Health Products4.7(808)

  $12.59
• 

  Nutricost L-Phenylalanine Capsules

  Walmart - eSupplements, llc4.7(218)

  $12.95
• 

  Solaray L-Phenylalanine 500 mg 60 Capsules

  Solaray4.7(31)

  $15.69
• 

  L-Phenylalanine Powder

  Nootropics Depot

  $19.99
• 

  Life Extension D,L-Phenylalanine Capsules

  DPS Nutrition4.7(514)

  $14.26
• 

  DL-Phenylalanine Capsules

  Nootropics Depot5.0(2)

  $14.99

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• Sports Nutrition

  4.8 (26)

  Vitamin & Supplements Shop

  Bradwall Rd, Sandbach CW11 1GE

  Directions07766 465279

• L R Supplements

  4.3 (6)

  Vitamin & Supplements Shop

  82 High St, Winsford CW7 2AP

  Directions01606 278381

• Fuelz Nutrition

  5.0 (5)

  Sports Nutrition Shop

  9 Nat Ln, Winsford CW7 3BS

  Directions07565 928651

• Supplement Junction

  5.0 (40)

  Health food shop

  25-27 Marsh St S, Hanley, Stoke-on-Trent ST1 1JA

  Directions01782 280201

• Holland & Barrett - Northwich

  4.6 (17)

  Vitamin & Supplements Shop

  72 High St, Northwich CW9 5AG

  Directions0330 058 2640

• Novanutri Ltd

  Vitamin & Supplements Shop

  Market Square, Sandbach CW11 5BD

  Directions01270 766439

• Castle Supps

  5.0 (23)

  Vitamin & Supplements Shop

  60 Liverpool Rd, Newcastle-under-Lyme, Newcastle ST5 2AX

  Directions

• P SUPPLEMENTS MANCHESTER

  4.6 (22)

  Vitamin & Supplements Shop

  23 Station Rd, Urmston, Manchester M41 9JG

  Directions0161 748 2054

• Disorders of amino acid metabolism, organic acidaemias and urea cycle disorders

  M Dixon, A MacDonald, FJ White - Clinical paediatric dietetics, 2020 - Wiley Online Library

  … provision of a suitable precursor‐free supplement of L‐amino acids is essential to both prevent protein deficiency and optimise metabolic control. The amount of phenylalanine tolerated …

  202058 citations

• Phenylalanine requirements with different levels of tyrosine

  LM Burrill, C Schuck - The Journal of Nutrition, 1964 - Elsevier

  … mg of L-phenylalanine as a tentative minimal daily requirement for young women when the diet also supplies 900 mg of … recently be come of special interest in the metabolic disturbance …

  196421 citations

• Risk Assessment of" Other Substances"–L-phenylalanine and DL-phenylalanine

  L Frøyland, M Haugen, K Holvik, M Løvik… - European Journal of …, 2020 - hal.science

  … an enzyme involved in the metabolism of phenylalanine, must … adverse health effects related to intake of L-phenylalanine and … , 250, 500, 750 and 1000 mg/day L-phenylalanine in food …

  20202 citations

• Phenylalanine metabolism

  AE Harper - Aspartame, 2020 - taylorfrancis.com

  … plasma below 10 mg/dl are not considered to be a hazard to the health of the offspring, the … Comparison of the metabolism of uniformly 14c-labelled L-phenylalanine, L-tyrosine and L-…

  202056 citations

• Disorders of phenylalanine and tyrosine metabolism

  H Alsharhan, C Ficicioglu - Translational Science of Rare …, 2020 - journals.sagepub.com

  … ) with synthetic, phenylalanine – free formula and medical food to provide all other nutrients … and health maintenance [46]. A wide range of Phe-free formulas and low protein medical …

  202041 citations

• L-Phenylalanine promotes liver steatosis by inhibiting BNIP3-mediated mitophagy

  Y Sun, L Cai, B Yu, H Zhang, Z Zhang, X Xu, Y Yu… - Molecular …, 2025 - Springer

  … L-Phenylalanine (L-Phe) levels are elevated in patients with metabolic dysfunction-associated steatotic liver disease (MASLD). However, whether L-Phe induces liver steatosis and the …

  20256 citations

Data sourced from the U.S. National Institutes of Health, Office of Dietary Supplements Dietary Supplement Label Database (DSLD) · Label entered 2022-09-22. DSLD Label ID: 274064. This information is provided for educational reference only and is not medical advice. Always follow the product label and consult a doctor or pharmacist before use.