---
product_id: 255727859
title: "NOW Supplements, L-Phenylalanine 500 mg, Nervous System Support*, Amino Acid, 120 Veg Capsules"
brand: "now"
price: "€ 38.88"
currency: EUR
in_stock: true
reviews_count: 5
category: "Now"
url: https://www.desertcart.nl/products/255727859-now-supplements-l-phenylalanine-500-mg-nervous-system-support-amino
store_origin: NL
region: Netherlands
---

# 120 vegan, soy & gluten-free capsules 500 mg pure L-Phenylalanine per capsule Supports dopamine & norepinephrine synthesis NOW Supplements, L-Phenylalanine 500 mg, Nervous System Support*, Amino Acid, 120 Veg Capsules

**Brand:** now
**Price:** € 38.88
**Availability:** ✅ In Stock

## Summary

> 🧬 Elevate your mind and body with clean, essential amino acid power!

## Quick Answers

- **What is this?** NOW Supplements, L-Phenylalanine 500 mg, Nervous System Support*, Amino Acid, 120 Veg Capsules by now
- **How much does it cost?** € 38.88 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.nl](https://www.desertcart.nl/products/255727859-now-supplements-l-phenylalanine-500-mg-nervous-system-support-amino)

## Best For

- now enthusiasts

## Why This Product

- Trusted now brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Allergen-Free Assurance:** Free from dairy, eggs, nuts, soy, and gluten—pure peace of mind.
- • **Clean, Vegan Powerhouse:** 120 soy-free, gluten-free capsules crafted for mindful wellness.
- • **Neuro-Boosting Amino Acid:** 500 mg of essential L-Phenylalanine fueling your brain’s neurotransmitters.
- • **Protein Synthesis Support:** Essential amino acid that’s a building block for your body’s proteins.
- • **Trusted Brand, Proven Results:** NOW’s quality you can rely on, with thousands of positive reviews.

## Overview

NOW Supplements L-Phenylalanine delivers 500 mg of a vital amino acid per vegan capsule, supporting neurotransmitter production for a healthy nervous system. Free from common allergens and made without fillers, this supplement is designed for professionals seeking clean, effective nervous system support in a trusted, high-quality formula.

## Description

500 mg Free-Form L-Phenylalanine is an essential amino acid that is necessary for the synthesis of proteins.* Because L-Phenylalanine can be readily converted into the amino acid tyrosine, which forms part of the structure of the neurotransmittters dopamine and norepinephrine, it is important for the maintenance of a healthy nervous system.* Natural color variation may occur in this product. Settling of powder may occur in the capsule, which is filled by weight without added fillers.

Review: 色々口コミを読み購入。飲むと気分が落ち着く気がします。
Review: I have always had good results with NOW brands and usually a good price. I've used this product when I would get really ill with asthma and allergies. It pulled me out of serious "colds/flu" many times. Not a cure, but very helpful. I stopped using it for many years as I stopped being so ill, but Juniper allergies has me using it again. I recommend you ask a clinical nutritionist, or other wellness professional for advise in your particular situation as you may not have the same results I have with it. It was recommended in a book, "The Diet Cure." This is a health book about what supplements might help you with different health problems.

## Features

- FREE-FORM/VEGAN CAPSULES: Essential amino acid necessary for the synthesis of proteins.
- NERVOUS SYSTEM SUPPORT: Readily converted into the amino acid tyrosine, forming part of the structure of the neurotransmitters dopamine and norepinephrine, making it important for the maintenance of a healthy nervous system.
- CERTIFICATIONS/CLASSIFICATIONS: Soy Free, Nut Free, Vegan/Vegetarian, Non-GMO, Egg Free, Dairy Free, Made without Gluten
- A Dietary Supplement
- Vegetarian/Vegan

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B000JCN2MW |
| ASIN  | B000JCN2MW |
| Additives | Amino Acid |
| Age Range Description | Adult |
| Allergen Information | Dairy Free, Egg Free, Gluten Free, Nut Free, Soy Free |
| Best Sellers Rank | #34,402 in Health ( See Top 100 in Health ) #582 in Amino Acid Nutritional Supplements |
| Brand | NOW |
| Customer Reviews | 4.4 4.4 out of 5 stars (2,112) |
| Customer reviews | 4.4 4.4 out of 5 stars (2,112) |
| Date First Available | 7 August 2012 |
| Department  | Health and Beauty>Health and Wellness |
| Format | Capsule |
| Is Discontinued By Manufacturer  | No |
| Item model number  | 0132 |
| Manufacturer  | NOW Sports - Nutrition and Wellness |
| Product Dimensions  | 6.35 x 6.35 x 11.28 cm; 100 g |
| Serving Recommendation | 1 Veg Capsule |
| Units | 120 Count |
| Volume | 100 Milliliters |
| Weight | 0.24 Kilograms |

## Product Details

- **Brand:** NOW
- **Diet type:** Gluten Free
- **Flavour:** Unflavored
- **Item dimensions L x W x H:** 6.4 x 6.4 x 11.3 centimeters
- **Item form:** Capsule
- **Item weight:** 0.1 Kilograms
- **Primary supplement type:** multivitamin
- **Product benefits:** Stress Relief
- **Special ingredients:** Amino Acid
- **Unit count:** 120 Count

## Images

![NOW Supplements, L-Phenylalanine 500 mg, Nervous System Support*, Amino Acid, 120 Veg Capsules - Image 1](https://m.media-amazon.com/images/I/713P38+NNbL.jpg)

## Questions & Answers

**Q: Is there a different between phenylalanine and l-phenylalanine? Why does the L have to be in front of phenylalanine?**
A: Yes. There are two forms of phenylalanine: D-Phenylalanine and L-Phenylalanine. They are mirror forms of each other - identical except one is 'left-handed' (L-) the other 'right-handed' (D-). (This is L/D dichotomy is true for all amino acids). D-Phenylalanine is synthetic and generally used more for reducing pain, while L-Phenylalanine is the naturally occurring form that is more readily converted into dopamine and norepinephrine and used to help with mood, energy and focus.

**Q: How does this compare to Naltrrxone?**
A: Reading the reference to Naltrexone, one has nothing to do with the other. L-Phenylalanine is a brain food supplement.

**Q: How does this compare to gaba?**
A: I use both for different reasons.  I use GABA when I need to settle my mind down. I have anxiety and gabba really helps that. I take L- Phenelaline (2-100mg) with a B6 and that specifically helps the fact that I can’t swallow without food getting stuck. I do that in the morning and evening where as GABA you can take when ever and it seems to work within 20 minutes. I find that the GABA-effects work for about 3-4 hours then I may need to take another one (750mg).

**Q: Is this product equivalent of Phentermine**
A: We do not have any information on pharmaceuticals. L-Phenylalanine is an essential amino acid that is necessary for the synthesis of proteins. Because L-Phenylalanine can be readily converted into the amino acid tyrosine, which forms part of the structure of the neurotransmittters dopamine and norepinephrine, it is important for the maintenance of a healthy nervous system.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Review
*by な***な on 10 January 2024*

色々口コミを読み購入。飲むと気分が落ち着く気がします。

### ⭐⭐⭐⭐⭐ Review
*by M***Y on 7 March 2025*

I have always had good results with NOW brands and usually a good price. I've used this product when I would get really ill with asthma and allergies. It pulled me out of serious "colds/flu" many times. Not a cure, but very helpful. I stopped using it for many years as I stopped being so ill, but Juniper allergies has me using it again. I recommend you ask a clinical nutritionist, or other wellness professional for advise in your particular situation as you may not have the same results I have with it. It was recommended in a book, "The Diet Cure." This is a health book about what supplements might help you with different health problems.

### ⭐⭐⭐⭐⭐ Review
*by A***R on 29 October 2025*

Important supplement for the nervous system

## Frequently Bought Together

- NOW Supplements, L-Phenylalanine 500 mg, Nervous System Support*, Amino Acid, 120 Veg Capsules
- NOW Foods Supplements, L-Tyrosine 500 mg, Supports Mental Alertness*, Neurotransmitter Support*, 120 Capsules
- NOW Foods Supplements, Taurine 1,000 mg, Double Strength, Nervous System Health*, 100 Veg Capsules

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*Product available on Desertcart Netherlands*
*Store origin: NL*
*Last updated: 2026-02-18*