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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1746500₫

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Description

🧬 Elevate your mind, naturally — the vegan amino acid edge you can’t miss!

PURE POTENT DOSAGE - Each capsule delivers a precise 500 mg dose for consistent, effective results
TRUSTED QUALITY BY NOW - Backed by a top-rated brand with 4.4 stars from over 2,000 reviews—join the wellness movement
CLEAN VEGAN POWERHOUSE - 120 soy-, gluten-, dairy-, nut-, and egg-free capsules for guilt-free daily support
STRESS RESILIENT FORMULA - Supports mood balance and mental clarity, helping you stay calm and focused under pressure
NEURO BOOSTING AMINO ACID - Essential L-Phenylalanine fuels neurotransmitter production to keep your nervous system sharp

NOW Supplements L-Phenylalanine 500 mg offers 120 vegan capsules of a key essential amino acid that supports protein synthesis and nervous system health by aiding dopamine and norepinephrine production. Free from common allergens and GMO-free, this supplement is designed for adults seeking clean, effective stress relief and cognitive support from a trusted brand.

Specifications

ASIN	B000JCN2MW
ASIN	B000JCN2MW
Age Range Description	Adult
Allergen Information	Dairy Free, Egg Free, Gluten Free, Nut Free, Soy Free
Best Sellers Rank	#31,102 in Health ( See Top 100 in Health ) #631 in Amino Acid Nutritional Supplements
Brand Name	NOW
Color	Off White
Container Type	Bottle
Customer Reviews	4.4 4.4 out of 5 stars (2,128)
Customer reviews	4.4 4.4 out of 5 stars (2,128)
Department	Health and Beauty>Health and Wellness
Diet Type	Gluten Free
Dosage Form	500
Flavor	Unflavored
Is Discontinued By Manufacturer	No
Item Dimensions	6.4 x 6.4 x 11.3 centimeters
Item Form	Capsule
Item Weight	0.1 Kilograms
Item model number	0132
Manufacturer	NOW Sports - Nutrition and Wellness
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
Product Benefits	Stress Relief
Product Dimensions	6.35 x 6.35 x 11.28 cm; 100 g
Special Ingredients	Amino Acid
Specific Uses For Product	Laboratory
Total Servings Per Container	120
UPC	733739001320
Unit Count	120 Count

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Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

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1746500₫

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In stock

Sold byAmazon VietnamDelivered 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 Vietnam.

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