Bulk Supplements
L-Phenylalanine
8.42Very Good
Price
Retail
$18.96
Container
500 servings
Serving
500 mg
Brand Quality
8.42
Why this score
Testing practices
- Lot Tested
- Third-Party Lab Tested
- Transparent Batch-Specific COAs
- ISO 17025 Lab
Testing coverage
- Identity
- Purity
- Potency
- Heavy Metals
- Raw Ingredient Testing
Certifications
- NSF Certified
- USDA Organic Certified
Manufacturing standards
- cGMP Certified
- Made in USA
Innovation
- Clinically Studied Product
Active Ingredients
- 500 mg
L-Phenylalanine
Ingredient research · L-Phenylalanine
L-Phenylalanine is an essential amino acid used to build proteins and make tyrosine, which in turn contributes to dopamine, norepinephrine, thyroid hormones, and melanin. Supplements are often considered for mood or focus, but distinct benefits beyond meeting nutritional needs are uncertain; people with phenylketonuria must restrict phenylalanine.
- Supports acute satiety and reduced food intake under controlled feeding conditions.
- Supports the acute postprandial blood-glucose response in controlled feeding studies.
Top References
- Dietary restraint and menstrual cycle phase modulated l-phenylalanine-induced satiety
- Effects of L-Phenylalanine on Energy Intake and Glycaemia—Impacts on Appetite Perceptions, Gastrointestinal Hormones and Gastric Emptying in Healthy Males
- Comparative effects of intraduodenal amino acid infusions on food intake and gut hormone release in healthy males
These statements have not been evaluated by the Food and Drug Administration. Any products and informational content displayed on this page are not intended to diagnose, treat, cure, or prevent any disease.