L-Phenylalanine delivers essential amino acid support for neurotransmitter production, helping mood, motivation, and mental sharpness through busy days at work and home. The star ingredient is L-phenylalanine, a building block for mood related neurotransmitters, helping support mental energy daily too. Capsules are vegan and non GMO, produced in a GMP certified facility to ensure quality and safety. This brand heritage means you can trust we focus on clean ingredients and transparent sourcing. As part of a balanced approach, this vitamin d supplement can complement daily wellness alongside probiotics and other nutrients.

Available Sizes & Variants:

120 Veg Capsules - convenient daily dose in plant based capsules.

Benefits & Features:

• Supports mood and mental focus throughout busy days.
• L phenylalanine is the star ingredient that supports neurotransmitter production for sharper attention.
• Plant based capsules ensure vegan friendly supplementation without common allergens.
• GMP certified facility and non GMO ingredients support consistent quality and safety.
• Designed for daily use, these capsules provide a simple, convenient way to support mood, energy, and brain health as part of a balanced lifestyle every day.

Now Foods has a long standing reputation for clean, transparent supplements. LPhenylalanine is delivered in vegan capsules produced in a GMP certified facility, reflecting strict quality and safety standards. The product uses hypromellose capsules and is non GMO, kosher, and allergen conscious, with natural colour variation indicating minimal processing. This approach underlines the brand's commitment to accessible, trusted nutrition.

United Kingdom Shipping:

Orders placed by 2pm (Monday to Friday) are dispatched the same day. Orders placed after 2pm will be dispatched the next working day.

Free shipping on orders over £50 to the UK.

Returns: Our products are meant to make you feel healthy and at your best. If you need to return your item, you can do so free of charge within 30 days in the same original and unopened packaging. Subject to T&C's.

Please consult the product packaging for accurate instructions on how to use the product.

The Active Ingredient Is: L-Phenylalanine

L-Phenylalanine is an essential amino acid involved in protein synthesis and in the production of other important molecules in the body.

This form is free-form L-phenylalanine supplied in a plant-based capsule, with the amino acid itself as the active substance.

What Does L-Phenylalanine Do?

L-Phenylalanine participates in neurotransmitter synthesis, acting as a precursor to tyrosine and contributing to the production of dopamine, norepinephrine, and epinephrine which support normal brain function and mental energy. It also forms phenylethylamine, linked with mood and cognitive adaptation. This aligns with EFSA guidance on the role of amino acids in neurotransmitter pathways.

In daily physiology, L-Phenylalanine plays a role in supporting normal nervous system function and mood-related processes, while remaining a part of broader metabolic activity that relies on amino acid availability.

This supplement is not intended to diagnose, treat, cure, or prevent any disease.

NOW Foods stands out in our evaluation for L-Phenylalanine because their manufacturing heritage is built on rigorous quality and safety principles, anchored by a GMP certified facility that emphasises high standards across the production process. The brand’s commitment to purity is reflected in non-GMO, vegetarian/vegan, and kosher formulations, with a straightforward ingredient profile that minimises fillers and artificial additives. This combination speaks to a long-standing reputation for transparent ingredient practices and dependable quality control.

This alignment with our requirements plus their allergen-conscious production supports consistent product integrity and reliability. Our team evaluated NOW Foods on formulation clarity, manufacturing discipline, and the ability to maintain strong supply standards for essential amino acids like L-Phenylalanine. The result is a confident partnering choice that matches our emphasis on traceable sourcing, rigorous testing, and consumer safety. This brand is evaluated by our expert team of doctors, nurses, and nutritionists for compliance with how we verify ingredient quality, reinforcing trust in every capsule.