Is there a different between phenylalanine and l-phenylalanine? Why does the L have to be in front of phenylalanine?

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.

How does this compare to Naltrrxone?

Reading the reference to Naltrexone, one has nothing to do with the other. L-Phenylalanine is a brain food supplement.

How does this compare to gaba?

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).

Is this product equivalent of Phentermine

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.

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NOW Supplements, L-Phenylalanine 500 mg, Nervous System Support*, Amino Acid, 120 Veg Capsules

Product ID: 255727859

Details

Brand
NOW
Diet type
Gluten Free
Flavour
Unflavored
Item dimensions L x W x H
6.4 x 6.4 x
Item form
Capsule
Item weight
0.1 Kilograms

🌱120 vegan, allergen-free capsules

💊500 mg pure L-Phenylalanine per capsule

🧠Supports dopamine & norepinephrine synthesis

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Description

🧬 Elevate your mind and mood with every capsule!

PURE POTENT FORMULA - Free-form amino acid ensures maximum absorption without fillers or additives
CLEAN VEGAN POWERHOUSE - 120 soy-, gluten-, dairy-, nut-, and egg-free capsules for guilt-free daily support
NEURO BOOSTING AMINO ACID - 500 mg of essential L-Phenylalanine fueling your brain’s dopamine and norepinephrine production
STRESS LESS PERFORM MORE - Supports nervous system health to help you stay calm, focused, and ready for anything
TRUSTED QUALITY PROVEN RESULTS - NOW brand with 4.4-star rating from over 2,000 reviews—join the wellness movement

NOW Supplements L-Phenylalanine delivers 500 mg of a free-form essential amino acid per vegan capsule, designed to support nervous system health by aiding neurotransmitter synthesis. This allergen-free, non-GMO formula comes in a 120-count bottle, perfect for professionals seeking clean, effective brain and mood support.

Specifications

ASIN	B000JCN2MW
Age Range Description	Adult
Allergen Information	Dairy Free, Egg Free, Gluten Free, Nut Free, Soy Free
Best Sellers Rank	#39,181 in Health ( See Top 100 in Health ) #649 in Amino Acid Nutritional Supplements
Brand	NOW
Brand Name	NOW
Color	Off White
Container Type	Bottle
Customer Reviews	4.4 out of 5 stars 2,197 Reviews
Diet Type	Gluten Free
Dosage Form	500
Flavor	Unflavored
Flavour	Unflavored
Global Trade Identification Number	08720634111799
Item Dimensions	6.4 x 6.4 x 11.3 centimeters
Item Form	Capsule
Item Nype Name	Dietary supplement with an essential amino acid
Item Weight	500 Milligrams
Item form	Capsule
Item weight	500 Milligrams
Manufacturer	NOW Sports - Nutrition and Wellness
Manufacturer Part Number	P8251
Material Features	Vegan
Material Type Free	egg free,gmo free,soy free,wheat free,gluten free
Model Name	upplements, L-Phenylalanine 500 mg, Nervous System Support*, Amino Acid, 120 Veg Capsules
Model Number	0132
Number of Items	1
Primary Supplement Type	multivitamin
Primary supplement type	multivitamin
Product Benefits	Stress Relief
Recommended Uses For Product	Amino Acid
Special Ingredients	Amino Acid
Specific Uses For Product	Laboratory
Total Servings Per Container	120
UPC	733739001320
Unit Count	120 Count
Unit count	120 Count

Reviews

な**な

効いているような気がします！

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。

10.01.2024

K**D

Effet notoire

J’ai senti une amélioration de mon humeur, dommage que ce produit n’est plus disponible à l’heure ou j’écris ce commentaire, je voudrais en reprendre

2.10.2024

W**K

Do not take if you ave G.I. issues

I found most amino acids are hard on people with G.I issues.

9.04.2019

A**A

Fiducia prodotti now food

Preso per una mese circa, umore migliorato e soprattutto sono tranquilla per quanto riguarda la qualità.

26.04.2022

M**F

Präventiv gegen Stress und bei Schilddrüsenproblemen

Wie alle Produkte dieser Marke sind wir auch mit diesem Artikel sehr zufrieden. Empfehlenswert für alle, die aus gesundheitlichen Gründen (Erkrankung der Schilddrüse) eine Alternative zu Tyrosin suchen.

3.08.2025

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R818

Duties & taxes included

In stock

Sold byAmazon South AfricaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to South Africa.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Neha S.

Excellent communication throughout the order process. Product is perfect.

2 weeks ago

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Best international shipping I've ever tried. Worth every penny!

3 days ago

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