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
• 

  DL-Phenylalanine Pure Encapsulations

  Milltown Pharmacy4.6(28)

  $63.50
• 

  Swanson DL-Phenylalanine 500 mg 100 Caps

  Swanson Health Products4.7(255)

  $9.44Lowest
• 

  Now Foods L-Phenylalanine 500 mg 120 Veg Capsules

  Professional Supplement Center4.7(807)

  $15.99
• 

  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
• 

  DL-Phenylalanine Powder

  Nootropics Depot

  $29.99

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.

• Nutrishop Murfreesboro

  4.8 (135)

  Vitamin & supplements store

  143 W Northfield Blvd, Murfreesboro, TN 37129

  Directions(615) 900-3283

• The Vitamin Shoppe

  4.4 (150)

  Vitamin & supplements store

  510 N Thompson Ln D, Murfreesboro, TN 37129

  Directions(615) 907-6307

• Nutrition Faktory Superstore

  4.8 (120)

  Vitamin & supplements store

  1250 NW Broad St, Murfreesboro, TN 37129

  Directions(629) 201-6946

• Ruck Nutrition

  4.6 (75)

  Vitamin & supplements store

  833 Memorial Blvd C, Murfreesboro, TN 37129

  Directions(615) 895-4090

• GNC

  4.1 (53)

  Vitamin & supplements store

  2615 Medical Center Pkwy Ste 1740, Murfreesboro, TN 37129

  Directions(615) 494-1685

• Sunshine Nutrition Center

  4.7 (51)

  Health food store

  621 S Church St, Murfreesboro, TN 37130

  Directions(615) 896-2972

• Shaklee Sales of Murfreesboro

  5.0 (3)

  Vitamin & supplements store

  2702 Wellington Pl, Murfreesboro, TN 37128

  Directions(615) 804-5471

• Nutrition Faktory

  4.5 (44)

  Vitamin & supplements store

  303 Sam Ridley Pkwy W, Smyrna, TN 37167

  Directions(615) 625-3963

• 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 2017-07-25. DSLD Label ID: 75491. 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.