DL-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 Capsule(s) · 1–2 per day

Not Present

• 

  Life Extension D,L-Phenylalanine Capsules

  DPS Nutrition4.7(514)

  $14.26
• 

  DL-Phenylalanine Capsules

  Nootropics Depot5.0(2)

  $14.99
• 

  Swanson DL-Phenylalanine 500 mg 100 Caps

  iHerb4.7(255)

  $12.59Lowest
• 

  DL-Phenylalanine Pure Encapsulations

  Milltown Pharmacy4.6(28)

  $63.50
• 

  Now Foods L-Phenylalanine 500 mg 120 Veg Capsules

  Professional Supplement Center4.7(807)

  $15.99
• 

  DL-Phenylalanine Powder

  Nootropics Depot

  $29.99
• 

  Bestvite DL-Phenylalanine 500mg 120 Vegetarian Capsules

  Walmart - BESTVITE INC4.8(12)

  $27.99
• 

  ZeinPharma Zein Pharma L-Phenylalanine

  vitalabo.com4.0(11)

  $28.48

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.

• Holland & Barrett - Beverley

  3.6 (17)

  Vitamin & Supplements Shop

  60 Toll Gavel, Beverley HU17 9BN

  Directions0330 058 2640

• Discount Supplements

  4.1 (39)

  Vitamin & Supplements Shop

  Clay St, Hull HU8 8HA

  Directions01482 606022

• Muscle Gainz Supplements

  5.0 (10)

  Vitamin & Supplements Shop

  73 Williamson St, Hull HU9 1EP

  Directions

• Power Health Products

  4.7 (11)

  Vitamin & Supplements Shop

  Airfield Estate, Pocklington Industrial Estate, York YO42 1NR

  Directions01759 302595

• K GEN Nutrition

  Sports Nutrition Shop

  81 Jack Harrison Ave, Cottingham HU16 5UN

  Directions

• Duolife- Zdrowie z Natury Sklepy UK

  Vitamin & Supplements Shop

  53 Kingsbury Way, Hull HU7 3JE

  Directions07535 797279

• Holland & Barrett - Cottingham

  4.4 (17)

  Vitamin & Supplements Shop

  3 Finkle St, Cottingham HU16 4AU

  Directions0330 058 2640

• Holland & Barrett - Hull St Stephens Tesco

  3.3 (7)

  Vitamin & Supplements Shop

  Ferenway C/o Tesco 110, Hull HU2 8LN

  Directions0330 058 2640

• The Craving Cure: The Nutritional Solution to Our Worldwide Dietary Crisis.

  J Ross - Townsend Letter, 2018 - faim.org

  … other aminos; 125 mg is our starting dose (versus 500 mg of most other aminos), … mg; a few need (1-3) 500 mg capsules to get the same results. (We have not liked the effects of 750 mg …

  2018

• Facts and myths related to the use and regulation of phenylalanine and other amino acids

  SN Young - Dietary Phenylalanine and Brain Function, 1988 - Springer

  … In a small placebo-controlled study, DL-phenylalanine did produce a modest improvement … L- and DL-phenylalanine in the USA, sometimes in capsules containing 500 mg (the amount …

  19887 citations

• Emerging therapeutic and cosmeceutical applications of phenylalanine and its metabolites

  Z Liao, T Parumasivam, Z Xiao, X Zhu… - Cutaneous and …, 2026 - Taylor & Francis

  Objective This review aims to comprehensively examine and integrate the extant knowledge pertaining to phenylalanine (Phe) and its key metabolites, namely tyrosine (Tyr), …

  2026

• and Regulation of Phenylalanine

  SN Young - Dietary Phenylalanine and Brain Function, 1988 - books.google.com

  … In a small placebo-controlled study, DL-phenylalanine did produce a modest improvement … L-and DL-phenylalanine in the USA, sometimes in capsules containing 500 mg (the amount …

  1988

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

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

  … DL-phenylalanine and is based on previous risk assessments. According to information from the Norwegian Food Safety Authority, L- and DL-phenylalanine … and DL-phenylalanine in …

  20202 citations

• Some investigations on the metabolism of phenylalanine and tyrosine in children with vitamin C deficiency

  THJ Huisman, JHP Jonxis - Archives of Disease in Childhood, 1957 - pmc.ncbi.nlm.nih.gov

  … The concentration of vitamin C in the blood was less than 0-1 mg. per 100 ml. In hospital the … of DL-phenylalanine each hour orally over a period of 10 hours (L-phenylalanine was not …

  195720 citations

Data sourced from the U.S. National Institutes of Health, Office of Dietary Supplements Dietary Supplement Label Database (DSLD) · Label entered 2017-06-23. DSLD Label ID: 75492. 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.