L-Phenylalanine is an essential amino acid used for protein synthesis and is a precursor to tyrosine, which forms part of the neurotransmitters dopamine and norepinephrine. This free-form formula delivers 500 mg per capsule in a vegetarian capsule.
Nervous system support: precursor to tyrosine, dopamine and norepinephrine.
Free-form amino: 500 mg per capsule for flexible dosing.
Vegetarian/Vegan: hypromellose (cellulose) capsule; no animal gelatin.
General product information only.
Supplement Information
Serving Size
Amount Per Serving
% Daily Value
1 veg capsule
L-Phenylalanine (free-form) — 500 mg
DV not established
Ingredients
Active: L-Phenylalanine (free-form).
Other ingredients: Hypromellose (cellulose capsule).
Free from: Not manufactured with wheat, gluten, soy, milk, egg, fish, shellfish or tree nut ingredients. Produced in a facility that processes other ingredients containing these allergens.
How to Use
Take 1 capsule, 1–3 times daily as needed, preferably between meals.
If new to phenylalanine, start with 1 capsule daily and adjust as guided by a professional.
Warnings & Storage
For adults only. Consult a physician if pregnant/nursing, taking medication, or have a medical condition (e.g. phenylketonuria (PKU) or high blood pressure).
Keep out of reach of children. Natural colour variation may occur.
Store in a cool, dry place after opening.
Specifications
Brand
NOW® Foods
Form
Vegetarian capsules
Count
120 capsules
Strength
500 mg L-Phenylalanine per capsule
UPC
733739001320
Product Code
NOW-00132
Approx. Dimensions
11.2 × 6.4 × 6.4 cm; ~0.11 kg
Best before
11/2027 (batch dependent)
First available
05/2007
Certifications
Non-GMO, Vegetarian/Vegan, Kosher
FAQ
What’s the difference between L-Phenylalanine and L-Tyrosine?
L-Phenylalanine is a dietary essential that can convert to L-Tyrosine; tyrosine then contributes to neurotransmitter synthesis.
When should I take it?
Between meals for best absorption; separate from protein-heavy meals if possible.
Is it suitable for vegans?
Yes — uses a cellulose (hypromellose) capsule.
★★★★★
Clearer focus
Felt more alert and less “foggy” after a few days. Easy to take between meals.
Verified customer
★★★★★
Reliable quality
Simple formula, vegan capsule, and consistent results — a staple in my stack.