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, Amino Acid, 120 Veg Caps

Product ID: 1424773

Details

Brand
NOW
Diet Type
Gluten Free
Flavor
Unflavored
Item Form
Capsule
Item Weight
0.1 kg
Item dimensions L x W x H
2.5 x 2.5 x

🌱120 vegan, allergen-free capsules

💊500 mg pure L-Phenylalanine per capsule

🧠Supports dopamine & norepinephrine synthesis

¥4193

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Description

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

NEURO BOOSTING SUPPORT - Promotes healthy nervous system function by aiding neurotransmitter production.
CLEAN CONSCIOUS FORMULA - Vegan, non-GMO, soy-free, gluten-free, dairy-free, and nut-free for mindful wellness.
STRESS LESS PERFORM MORE - Natural support for mood and stress resilience to keep you sharp and balanced.
TRUSTED QUALITY ASSURANCE - GMP-certified, family-owned brand since 1968 ensuring premium potency and purity.
PURE POWER IN EVERY CAPSULE - 500 mg of essential amino acid fueling protein synthesis and brain health.

NOW Foods L-Phenylalanine delivers 500 mg of a vital amino acid per vegan capsule, supporting protein synthesis and neurotransmitter production for nervous system health. Free from common allergens and certified GMP quality assured, this supplement is crafted by a trusted family-owned brand since 1968, perfect for professionals seeking clean, effective brain and body support.

Specifications

ASIN	B000JCN2MW
ASIN	B000JCN2MW
Age Range Description	Adult
Allergen Information	Dairy Free, Egg Free, Gluten Free, Nut Free, Soy Free
Best Sellers Rank	#36,022 in Health & Household ( See Top 100 in Health & Household ) #578 in Amino Acid Nutritional Supplements #1,457 in Mineral Supplements #2,299 in Sales & Deals
Brand Name	NOW
Color	White
Container Type	Bottle
Customer Reviews	4.4 4.4 out of 5 stars (2,240)
Date First Available	June 26, 2005
Department	Health and Beauty>Health and Wellness
Diet Type	Gluten Free, Vegan
Dosage Form	500
Flavor	Unflavored
Item Dimensions	2.5 x 2.5 x 4.44 inches
Item Form	Capsule
Item Weight	0.1 kg
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	L-Phenylalanine
Product Benefits	Stress Relief
Product Dimensions	2.5 x 2.5 x 4.44 inches; 3.53 ounces
Recommended Uses For Product	Amino Acid
Special Ingredients	Amino Acid
Specific Uses For Product	Amino Acid
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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¥4193

Duties & taxes included

In stock

Sold byAmazon JapanDelivered 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 Japan.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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