Working...
L-Phenylalanine, an essential amino acid, is a precursor of the amino acid tyrosine, and to a whole series of neurotransmitters and hormones.  Phenylalanine is first converted to tyrosine, which becomes L-dopa, which converts to norepinephrine, a key neurotransmitter and an adrenal hormone.  L-Phenylalanine is also a direct precursor of PEA (Phenylethylamine), another important neurotransmitter..
Full price 7.25
Savings 30%

L-Phenylalanine (500 mg-50 tabs)*

price Price is too low to show. Add it to your cart
Buy 3 - Get free delivery on whole order

Source Naturals

L-Phenylalanine

L-Phenylalanine, an essential amino acid, is a precursor of the amino acid tyrosine, and to a whole series of neurotransmitters and hormones. Phenylalanine is first converted to tyrosine, which becomes L-dopa, which converts to norepinephrine, a key neurotransmitter and an adrenal hormone. L-Phenylalanine is also a direct precursor of PEA (Phenylethylamine), another important neurotransmitter.

Suggested Use:1 to 2 tablets daily.

Supplement Facts
L-Phenylalanine
Serving Size:1 Tablet
  APS%DV
Calcium 99mg 10%
L-Phenylalanine 1g 0

Other Ingredients:dibasic calcium phosphate, stearic acid, colloidal silicon dioxide, modified cellulose gum and magnesium stearate.
Suitable for vegetarians.

Warning:Contains phenylalanine. Not to be used by phenylketonurics, women who are pregnant, may become pregnant, or breastfeeding, or with antidepressant drugs such as MAOIs or SSRIs. If you have chronic high blood pressure, take after meals and/or consult your health care professional.
Do not use if either tamper-evident seal is broken or missing. Keep out of the reach of children.

By Myron Young - Flag 
Comments? Question?
Updated Mar. 31, 2016, about 9 years ago

SKU: SN0160
UPC: 021078001607
Distributed or manufactured from Source Naturals. See more Source Naturals products.
L-Phenylalanine (500 mg-100 tabs)*
L-Phenylalanine (500 mg-100 tabs)* Source Naturals


 9.09 
Source Naturals
Amino Athlete (1000 mg 50 tabs)*
Amino Athlete (1000 mg 50 tabs)* Source Naturals


 9.79 
Source Naturals
L-Tyrosine (500 mg-100 tabs)*
L-Tyrosine (500 mg-100 tabs)* Source Naturals


 9.45 
Source Naturals

Be the first to tell us your thoughts.Add your testimonial

Questions and answers:

Explore More Products

L-Phenylalanine (500 mg-100 tabs)*
L-Phenylalanine (500 mg-100 tabs)* Source Naturals


 9.09 
Source Naturals
L-Tryptophan (500 mg-120 tabs)*
L-Tryptophan (500 mg-120 tabs)* Source Naturals


 25.00 
Source Naturals
L-Tyrosine (500 mg-100 tabs)*
L-Tyrosine (500 mg-100 tabs)* Source Naturals


 9.45 
Source Naturals

phenylalanine l neurotransmitter precursor, tyrosine phenylethylamine 99mg phenylketonurics, chronic amino 1g hormones
1. Statements and claims on Seacoast.com have not been evaluated by the FDA and are not intended to treat or diagnose any ailment or disease.

What interests you?

SoFresh Adult Flossing Toothbrush (Soft) OraMedix Inc.

Curamin (120 Caps) Terry Naturally

Wobenzym | Systemic Enzymes | Wobenzym N
Wobenzym N is the authentic systemic enzyme formula developed by Mucos Pharma in Germany and trusted by millions of people worldwide for over 40 years. Free Shipping on all Wobenzym orders with delivery inside the United States.

Pure Factors Pro IGF T 1100 (30 ml) Pure Solutions

PQQ Caps with BioPQQ (20mg 30 capsules)* Life Extension

Happy Camper, 120 Veggie Caps Natural Balance

Dietary Supplements - Are they safe and effective?
Despite recent news reports, supplements are reasonable choices when used properly.

Fresh Green Black Walnut Wormwood Complex (2 oz) NOW Foods

Lumina Health CellFood | Oxygen Therapy
Cellfood is the world's top-selling oxygen+nutrient formula sold in over 70 countries and recommended by health professionals everywhere. Celebrating 40 years of enhancing health throughout the world.

Phenocane Curcumin (120 capsules) OxyLife

Blood Builder (90 tabs)* MegaFood

Life Extension Mix Tablets (315 tablets)* Life Extension

PGX Daily | Benefits, Treatments & Side Effects
PGX is the new science of appetite control. The PGX program can be a comfortable way to improve eating habits for life.

Papaya Enzymes (250 Chewable Tabs) Seacoast Vitamins

MucoStop (48 caps)* EnzyMedica

Steel Libido for Women (75 softgels)* Irwin Naturals

Celery Seed Health Benefits
Celery Seed Extract is widely used as an effective diuretic, as well as a dietary supplement to help improve circulation and heart health.

Bioactive Cranberry CranRx (500 mg|30 Vcaps) Nature's Way

Prostasol (80 caps)* Seacoast Natural Health

Bryonia alba 9C Boiron

Ultra Natural Prostate with ApresFlex and Standardized Lignans*(60 softgels) Life Extension

Organic Wheat Grass Powder (9 oz) NOW Foods

Blood Builder (180 tabs)* MegaFood

Vitamineral GREEN Capsules Version 5.3(400 v-caps)* HealthForce Nutritionals

L-Glutathione Reduced Setria 500 mg (60 caps) Healthy Origins

5 HTP 50 mg (60 Caps)* Lidtke