--- product_id: 1424773 title: "NOW Foods Supplements, L-Phenylalanine 500 mg, Nervous System Support*, Amino Acid, 120 Veg Capsules" brand: "now foods" price: "703076₫" currency: VND in_stock: true reviews_count: 9 category: "Now Foods" url: https://www.desertcart.vn/products/1424773-now-foods-supplements-l-phenylalanine-500-mg-nervous-system-support store_origin: VN region: Vietnam --- # 120 vegan, allergen-free capsules 500 mg pure L-Phenylalanine per capsule Supports dopamine & norepinephrine synthesis NOW Foods Supplements, L-Phenylalanine 500 mg, Nervous System Support*, Amino Acid, 120 Veg Capsules **Brand:** now foods **Price:** 703076₫ **Availability:** ✅ In Stock ## Summary > 🧠 Elevate your mind, fuel your day — don’t get left behind! ## Quick Answers - **What is this?** NOW Foods Supplements, L-Phenylalanine 500 mg, Nervous System Support*, Amino Acid, 120 Veg Capsules by now foods - **How much does it cost?** 703076₫ with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.vn](https://www.desertcart.vn/products/1424773-now-foods-supplements-l-phenylalanine-500-mg-nervous-system-support) ## Best For - now foods enthusiasts ## Why This Product - Trusted now foods brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Legacy of Excellence:** Family-owned USA brand since 1968, trusted by thousands of professionals for consistent cognitive support - • **Mood & Focus Support:** Clinically backed to enhance mood, mental clarity, and nervous system health—feel the difference every day - • **GMP-Certified Quality:** Manufactured under strict GMP standards ensuring potency, purity, and safety you can trust - • **Clean, Vegan Powerhouse:** 120 soy-free, gluten-free, non-GMO capsules for guilt-free daily brain fuel - • **Neuro-Boosting Amino Acid:** Essential L-Phenylalanine converts to tyrosine, fueling neurotransmitters that keep your mind sharp ## Overview NOW Foods L-Phenylalanine delivers 500 mg of a vital amino acid per vegan capsule, designed to support neurotransmitter production for optimal nervous system function. Free from common allergens and manufactured under GMP-certified conditions, this supplement is a clean, reliable choice for professionals seeking enhanced mood, focus, and cognitive resilience. ## 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: Increase your IQ! Take morning and night! - I'm way smarter now than I was as a young person! I can't credit the keto diet entirely but I think it is the main factor. Taking this kind of supplement is second. It has repaired my brains and kept me sharp. I take it morning and night! Every single day!! Review: It Works - I am a 58 year old night-shift nurse battling to keep my mood up and my mental alertness sharp. I have experimented with other supplements with limited success. But phenylalanine is remarkable. Since taking phenylalanine I have noticed a positive shift in my mood, my outlook on life, and my general sense of well-being. A moment ago I woke up from my sleep with the first thought floating up out of mouth, “What a beautiful day!” That caused my to pause and consider what makes this day beautiful. Outwardly it is not different than any other day. Circumstances have not changed. I did not win the lottery. But here I was sitting up in my bed with this unfamiliar feeling of goodness—or feeling good. I feel good. I feel better. The day seems brighter. And I also sense a strange but welcomed flow of energy affecting my thought life. It is very mild, but noticeable. I am grateful to have found this product. And I hope this review will help others to make an informed decision on the purchase of phenylalanine. ## 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 - GMP Quality Assured: NPA A-rated GMP certification means that every aspect of the NOW manufacturing process has been examined, including our laboratory/testing methods (for stability, potency, and product formulation). - Packaged in the USA by a family owned and operated company since 1968 - During the summer months products may arrive warm but desertcart stores and ships products in accordance with manufacturers' recommendations, when provided. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B000JCN2MW | | ASIN | B000JCN2MW | | Age Range Description | Adult | | Allergen Information | Dairy Free, Egg Free, Gluten Free, Nut Free, Soy Free | | Best Sellers Rank | #40,550 in Health & Household ( See Top 100 in Health & Household ) #634 in Amino Acid Nutritional Supplements #1,593 in Mineral Supplements #2,549 in Sales & Deals | | Brand Name | NOW Foods | | Color | White | | Container Type | Bottle | | Customer Reviews | 4.4 4.4 out of 5 stars (2,222) | | Date First Available | June 26, 2005 | | Department | Health and Beauty>Health and Wellness | | Diet Type | Gluten Free, Vegan | | Dosage Form | 500 | | Flavor | Unflavored | | Is Discontinued By Manufacturer | No | | Item Dimensions | 2.5 x 2.5 x 4.44 inches | | 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 | 2.5 x 2.5 x 4.44 inches; 3.53 ounces | | Special Ingredients | Amino Acid | | Total Servings Per Container | 120 | | UPC | 733739001320 | | Unit Count | 120.00 Count | ## Product Details - **Brand:** NOW Foods - **Diet Type:** Gluten Free, Vegan - **Flavor:** Unflavored - **Item Form:** Capsule - **Item Weight:** 0.1 Kilograms - **Item dimensions L x W x H:** 2.5 x 2.5 x 4.44 inches - **Primary Supplement Type:** multivitamin - **Product Benefits:** Stress Relief - **Special Ingredients:** Amino Acid - **Unit Count:** 120.00 Count ## Images ![NOW Foods 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) ## Available Options This product comes in different **Size** options. ## 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 ### ⭐⭐⭐⭐⭐ Increase your IQ! Take morning and night! *by A***R on January 30, 2026* I'm way smarter now than I was as a young person! I can't credit the keto diet entirely but I think it is the main factor. Taking this kind of supplement is second. It has repaired my brains and kept me sharp. I take it morning and night! Every single day!! ### ⭐⭐⭐⭐⭐ It Works *by B***S on March 6, 2018* I am a 58 year old night-shift nurse battling to keep my mood up and my mental alertness sharp. I have experimented with other supplements with limited success. But phenylalanine is remarkable. Since taking phenylalanine I have noticed a positive shift in my mood, my outlook on life, and my general sense of well-being. A moment ago I woke up from my sleep with the first thought floating up out of mouth, “What a beautiful day!” That caused my to pause and consider what makes this day beautiful. Outwardly it is not different than any other day. Circumstances have not changed. I did not win the lottery. But here I was sitting up in my bed with this unfamiliar feeling of goodness—or feeling good. I feel good. I feel better. The day seems brighter. And I also sense a strange but welcomed flow of energy affecting my thought life. It is very mild, but noticeable. I am grateful to have found this product. And I hope this review will help others to make an informed decision on the purchase of phenylalanine. ### ⭐⭐⭐⭐⭐ I've had good results with this product to decrease symptoms with asthma and allergies. *by M***Y on March 7, 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. ## 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 --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.vn/products/1424773-now-foods-supplements-l-phenylalanine-500-mg-nervous-system-support](https://www.desertcart.vn/products/1424773-now-foods-supplements-l-phenylalanine-500-mg-nervous-system-support) --- *Product available on Desertcart Vietnam* *Store origin: VN* *Last updated: 2026-04-24*