Net Contents
60 Capsule(s)
Serving Size
1 Capsule(s)
Servings Per Container
Not specified
Supplement Form
Capsule
Bar Code (UPC/SKU)
7 33739 00130 6
Product Version
CODE 0130 V4
Label Analysis
Objective insights generated automatically from the official DSLD label — a quick, factual read of how this product is formulated and disclosed.
Single-ingredient formula listed in Supplement Facts.
Every active ingredient discloses a specific amount per serving.
Label states: Gluten-Free.
This analysis is generated algorithmically from label data for educational reference only. It is not a product endorsement, ranking, or medical advice.
Supplement Facts
Serving Size: 1 Capsule(s) · 1–3 per day
| Ingredient | Amount Per Serving | |
|---|---|---|
| L-Phenylalanine | 500 mg | — |
Not Present
Other Ingredients
Target Groups
Label Claims
Directions & Suggested Use
Suggested/Recommended/Usage/Directions
SUGGESTED USAGE: As a dietary supplement, take 1 capsule 1 to 3 times daily as needed, preferably between meals.
Warnings & Precautions
Precautions re: All Other
Caution: For adults only.
Precautions re: Pregnant or Nursing or Prescription Medications
Consult physician if pregnant/nursing, taking medication, or have a medical condition.
Precautions re: All Other
Persons with high blood pressure should consult a physician before using.
Precautions re: Children
Keep out of reach of children.
Precautions re: Allergies
Not manufactured with wheat, gluten, soy, milk, egg, fish, shellfish or tree nut ingredients. Produced in a GMP facility that processes other ingredients containing these allergens.
Storage
Storage
Store in a cool, dry place after opening.
Formulation
Formulation re: Does NOT Contain
Not manufactured with wheat, gluten, soy, milk, egg, fish, shellfish or tree nut ingredients.
FDA Statements
FDA Disclaimer Statement
*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure or prevent any disease.
FDA Statement of Identity
A Dietary Supplement
Other Label Statements
General Statements: All Other Content
Please Recycle.
General Statements: All Other Content
L-Phenylalanine is an essential amino acid that can be readily converted into the amino acid tyrosine. Because tyrosine is necessary for the synthesis of proteins and the production of the neurotransmitters dopamine and norepinephrine, phenylalanine is an extremely important nutrient that must be obtained through the diet or supplementation.*
General Statements: All Other Content
CAPSULE SIZE
General: Product/Version Code
CODE 0130 V4
General Statements: All Other Content
NERVOUS SYSTEM SUPPORT
General Statements: All Other Content
~ Supports Positive Mood* ~ Free-Form
Seals/Symbols
QUALITY GMP ASSURED
General Statements: All Other Content
Settling of powder may occur in the capsule, which is filled by weight without added fillers.
Manufacturer & Distributor
Manufacturer
NOW Foods
395 S. Glen Ellyn Rd., Bloomingdale, IL, 60108, USA
Market Reference
Now Foods L-Phenylalanine 500 mg 120 Veg Capsules
iHerb4.7(808)$12.24NOW L-Phenylalanine 500 mg Capsules
Vitamart.ca4.7(808)$14.16Nutricost L-Phenylalanine Capsules
Walmart - eSupplements, llc4.7(218)$12.95NOW Foods L- Tryptophan Relaxation Support Capsules
iHerb4.6(4100)$13.46DL-Phenylalanine Capsules
Nootropics Depot5.0(2)$14.99L-Phenylalanine Brain & Skin Health Support Powder
Walmart - BulkSupplements.com4.8(19)$25.97Source Naturals L-Phenylalanine 500 mg 50 Tablets
Instacart5.0(1)$13.89L-Phenylalanine Powder
Nootropics Depot$19.99
Where to Buy Locally
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.
ITL Health
5.0 (37)Vitamin & Supplements Shop
50 Broadway, London SW1H 0BL
Prodentim
5.0 (1)Vitamin & Supplements Shop
72 Regent St., London W1B 4EN
Protiv Nutrition
5.0 (1)Vitamin & Supplements Shop
3rd Floor, 207 Regent St., London W1B 3HH
RightNutri
4.9 (78)Vitamin & Supplements Shop
26 Queenstown Rd, London SW8 3RX
British Supplements
3.4 (275)Vitamin & Supplements Shop
34, New House, 67-68 Hatton Garden, London EC1N 8JY
Nayble Health & Sports
5.0 (139)Vitamin & Supplements Shop
18 Chamberlayne Rd, London NW10 3JD
Indi Supplements
4.3 (12)Vitamin & Supplements Shop
27 Old Gloucester St, London WC1N 3AF
Dietapplements Limited
4.8 (6)Vitamin & Supplements Shop
27 Old Gloucester St, London WC1N 3AX
Research & Studies
Risk Assessment of" Other Substances"–L-phenylalanine and DL-phenylalanine
L Frøyland, M Haugen, K Holvik, M Løvik… - European Journal of …, 2020 - hal.science
… are ingredients in food supplements sold in Norway. NFSA … L-phenylalanine and DL-phenylalanine in food supplements: … adverse health effects related to intake of L-phenylalanine and …
20202 citationsPhenylalanine ammonia lyase, enzyme substitution therapy for phenylketonuria, where are we now?
CN Sarkissian, A Gámez - Molecular genetics and metabolism, 2005 - Elsevier
… The treatment regimen today is not much different. The diet … regulation of dietary l-phenylalanine intake to <500 mg/day, … Large neutral amino acid supplementation to compete with …
2005153 citationsSubchronic tolerance trials of graded oral supplementation with phenylalanine or serine in healthy adults
N Miura, H Matsumoto, L Cynober, PJ Stover, R Elango… - Nutrients, 2021 - mdpi.com
… in healthy male adults allow the authors to propose the highest tested dose (12 g/day) as a subchronic clinical NOAEL for both supplemental phenylalanine and supplemental serine. …
202116 citationsRole of phenylalanine and its metabolites in health and neurological disorders
M Akram, M Daniyal, A Ali, R Zainab… - … and Role in …, 2020 - books.google.com
… Phenylalanine is a component of food sources and also derived through supplementation. In … L-phenylalanine in combination with UVA exposure or application of L-phenylalanine in …
202070 citationsProtein Substitutes in PKU; Their Historical Evolution.
A Daly, S Evans, A Pinto, C Ashmore… - …, 2021 - search.ebscohost.com
… benefits of improved bone and gut health, nitrogen retention, and … was crude and limited but now precision manufacturing has … phenylpyruvic excretion, with L phenylalanine leading to a …
202172 citationsThe effect of various doses of phenylalanine supplementation on blood phenylalanine and tyrosine concentrations in tyrosinemia type 1 patients
WG van Ginkel, HE van Reemst, NS Kienstra, A Daly… - Nutrients, 2019 - mdpi.com
… mg and 100 mg of L-phenylalanine were prepared by the pharmacy in the University Medical … concentrations while receiving 40 mg/kg/day phenylalanine supplementation, whereas all …
201921 citations
Data sourced from the U.S. National Institutes of Health, Office of Dietary Supplements Dietary Supplement Label Database (DSLD) · Label entered 2015-01-23. DSLD Label ID: 41357. 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.
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