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 10 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?

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.

PRID (18 g) Hylands

PMS Relief (30 tablets)* Rainbow Light

Infection Formula (100 Caps) Christophers Original Formulas

Blood Builder (90 tabs)* MegaFood

Acetyl-L-Carnitine Arginate (90 vcaps)* Life Extension

Ignatia amara 9C Boiron

RevitalX & Detoxitech | 7 Day Nutritional Cleansing Program* Natural Factors

IP6 Inositol Hexophosphate (500 mg 120 capsules) Jarrow Formulas

Danzen | Serracel | Serrapeptase
Serracel provides a healthy response to sports injuries or surgery, muscle tears and pulls, sinus activity, joint mobility and fluid retention. Serracel on Sale from Seacoast Natural Health.

Warrior Food Extreme Ultimate Protein Supplement - Economy Size (Vanilla 1000 g)* HealthForce Nutritionals

Circulex, Proanthanol (90 Vcaps) NutriCology

Histaminum hydrochloricum 9C Boiron

ORAC-Energy Greens (60 day 364 g) Paradise Herbs

Vectomega | Major Advance in Omega 3 Fish Oil Products
Vectomega by Europharma. Fifty times more potent than regular fish oil products. Vectomega delivers superior bioavailability over other EPA/DHA products. Buy Direct from Seacoast.com and $ave.

Steel Libido for Women (75 softgels)* Irwin Naturals

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.

Sambucus Black Elderberry Syrup (4oz) Nature's Way

MucoStop (48 caps)* EnzyMedica

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

40,000 Volts (8 oz) Trace Mineral Research

Zyflamend Whole Body (120 Vegetarian Caps)* New Chapter Nutrition

Enzyme Aid Digestive Tabs (100 Tabs) Nature's Life

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

Magnesium Chloride Liquid (8 oz) NutriCology

Betaine HCl with Pepsin (100 Tabs) Seacoast Vitamins