L-Phenylalanine Capsules
Scored by the Formulate Research Team · Last reviewed July 2026
Score Breakdown
Formulate scores every product across six weighted dimensions. Each dimension is graded independently — hover or tap to see what drove each component.
Ingredients per Serving
Certifications & Testing
Other Ingredients
None
Recommended Use
Suggested use: As a dietary supplement, take 500 mg (about 1/5 tsp) one to three times daily, or as directed by a physician.
Warnings
Always consult a physician before taking any dietary supplement. Keep out of reach of children.
Frequently Asked Questions
What is BulkSupplements L-Phenylalanine Capsules's Formulate score?
BulkSupplements L-Phenylalanine Capsules scores 88 out of 100 (grade A) on Formulate's ingredient-level rubric: clinical evidence, dose accuracy and bioavailability carry the score, while manufacturing, transparency and safety are checked separately and can only deduct.
Is BulkSupplements L-Phenylalanine Capsules worth it?
BulkSupplements L-Phenylalanine Capsules scores 88/100 (grade A). That puts it in Formulate's top tier: its ingredient doses, forms, and label transparency hold up against the clinical evidence, and it carries credible third-party testing. Formulate grades every product with the same automated rubric, so the score reflects the formula — not marketing or sponsorships.
What's in BulkSupplements L-Phenylalanine Capsules?
Each serving contains L-Phenylalanine (500 mg). Serving size: 500 mg. 1000 servings per container.
How do I take l-phenylalanine capsules?
Suggested use: As a dietary supplement, take 500 mg (about 1/5 tsp) one to three times daily, or as directed by a physician.
Who makes L-Phenylalanine Capsules?
L-Phenylalanine Capsules is made by BulkSupplements. See Formulate's full grade and product lineup for BulkSupplements on its brand page.
Is BulkSupplements L-Phenylalanine Capsules third-party tested?
BulkSupplements lists the following certifications and testing for this product: cGMP Certified, Third-Party Tested, NSF Certified, Gluten-Free, Dairy-Free.
Related Supplements
Track l-phenylalanine capsules in your stack
Build a personalized supplement stack free in your browser — no install. Flag dose overlaps and interactions, and keep every product scored against the latest evidence.
Is L-Phenylalanine Capsules right for your goals?
Two questions, then every ingredient graded against what you're actually trying to do — plus what it costs per effective dose.
Build my stack2 questions · free · no account needed to start
Also on iPhone — get the free app
Evidence-based supplement guides, no spam
We send a short digest when new guides drop — nothing else. No affiliate pushes, no sponsored content, unsubscribe anytime.
Disclosure. Formulate may earn a commission from purchases made through links on this page. Commissions never influence scores — every product is graded by the same automated rubric. This page is for educational purposes only and does not replace advice from a qualified healthcare provider.