L-Phenylalanine

Suggested Use

Suggested Use: 1 to 2 tablets daily.

• 

  Source Naturals L-Phenylalanine 500 mg Tablets

  iHerb4.7(122)

  $9.38
• 

  Source Naturals L-Phenylalanine Powder

  Herbs Direct

  $8.66Lowest
• 

  Source Naturals, L-Phenylalanine, 100 Tablets

  Maple Herbs4.7(122)

  $35.01
• 

  Source Naturals DLPA mg

  Walmart - Health Chest4.6(350)

  $11.99
• 

  Source Naturals L-Phenylalanine 500 mg 100 Tablets

  GoSupps.com4.7(122)

  $34.99
• 

  Now L-Phenylalanine 500 mg

  Swanson Health Products4.7(804)

  $12.59
• 

  Source Naturals, L-Phenylalanine, Powder

  Maple Herbs

  $70.77
• 

  L-Phenylalanine Brain & Skin Health Support Powder

  Walmart - BulkSupplements.com4.8(21)

  $25.97

Enter your city or ZIP code to find supplement & health stores in your area that may carry this product.

Showing representative supplement & health retailers — search above for stores in your area.

• Vitamin Hut

  4.8 (16)

  Vitamin & supplements store

  21-23 49th Ave, Long Island City, NY 11101

  Directions(332) 227-5549

• GNC

  4.0 (22)

  Vitamin & supplements store

  23-20 Jackson Ave, Long Island City, NY 11101

  Directions(718) 730-1105

• The Vitamin Shoppe

  4.3 (163)

  Vitamin & supplements store

  385 5th Ave, New York, NY 10016

  Directions(212) 532-4534

• Promix Nutrition

  4.8 (362)

  Vitamin & supplements store

  182 Mulberry St # Store, New York, NY 10012

  Directions(352) 221-9320

• Willner Chemists

  4.7 (146)

  Vitamin & supplements store

  100 Park Ave, New York, NY 10017

  Directions(800) 633-1106

• Vitamin Peddler Inc

  5.0 (52)

  Vitamin & supplements store

  142 W 83rd St, New York, NY 10024

  Directions(212) 877-7701

• Village Supplements

  5.0 (8)

  Vitamin & supplements store

  261 E 10th St, New York, NY 10009

  Directions

• The Vitamin Shoppe

  4.4 (98)

  Vitamin & supplements store

  81-27 37th Ave, Jackson Heights, NY 11372

  Directions(718) 396-2822

• Evaluation of Total Isoflavones in Chickpea (Cicer arietinum L.) Sprouts Germinated under Precursors (p-Coumaric Acid and L-Phenylalanine) …

  J Arora, B Kanthaliya, A Joshi, M Meena, S Meena… - Plants, 2023 - mdpi.com

  Cicer arietinum L. (Bengal gram, chickpea) is one of the major pulse crops and an important part of traditional diets in Asia, Africa, and South America. The present study was conducted …

  202317 citations

• … the catalytic efficiency of a highly thermostable phenylalanine ammonia-lyase from Nostoc sp. ATCC 53789 and its application in producing low L-phenylalanine …

  X Han, Y Wang, X Wei, H Yu, S Liu, H Tan, F Xin - Food Chemistry, 2026 - Elsevier

  Daily dietary supplementation with low L-phenylalanine (L-Phe) protein is crucial for phenylketonuria (PKU) patients. Phenylalanine ammonia-lyase (PAL) catalyzes L-Phe deamination …

  2026

• Nutrition in phenylketonuria

  A MacDonald, JC Rocha, M Van Rijn… - Molecular genetics and …, 2011 - Elsevier

  The same basic principles are used to deliver dietary treatment in PKU that was developed sixty years ago. Dietary treatment is undoubtedly very successful, but it has gradually evolved …

  2011213 citations

• Application of achiral–chiral two‐dimensional HPLC for separation of phenylalanine and tryptophan enantiomers in dietary supplement

  A Lomenova, K Hroboňová - Biomedical Chromatography, 2021 - Wiley Online Library

  … In the dietary supplement for relaxing and improving mental health, selected for the purpose … It was found that the tested sample of dietary supplement contained l-phenylalanine and l-…

  202119 citations

• L-Phenylalanine preharvest spraying effectively enhances the reactive oxygen metabolism and antioxidant capacity in postharvest broccoli

  X Wang, T Wang, N Su, W Liu, M Gao, R Li, Y Li… - Plant Physiology and …, 2025 - Elsevier

  Broccoli exhibits a high susceptibility to quality deterioration during postharvest storage. Previous studies have shown that preharvest spraying of 2 mmol/L L-phenylalanine (L-Phe) can …

  20259 citations

• Sensing, Uptake and Catabolism of L-Phenylalanine During 2-Phenylethanol Biosynthesis via the Ehrlich Pathway in Saccharomyces cerevisiae

  J Dai, H Xia, C Yang, X Chen - Frontiers in microbiology, 2021 - frontiersin.org

  … L-Phenylalanine has been proven to be a nonpreferred nitrogen source in S. cerevisiae, and the crucial genes of the Ehrlich pathway are modulated by NCR in the presence of …

  202181 citations

Data sourced from the U.S. National Institutes of Health, Office of Dietary Supplements Dietary Supplement Label Database (DSLD) · Label entered 2017-04-25. DSLD Label ID: 73378. 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.