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.

Vitamin D3 (2500 IU 100 softgels) Jarrow Formulas

Blood Builder (90 tabs)* MegaFood

Zyflamend | New Chapter Zyflamend Side Effects
Zyflamend Bonus Pack

Kava Kava 450 mg (60 Vcaps) Natural Balance

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

Doctors Choice for Diabetics (90 Tabs) Enzymatic Therapy

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

StemXCell (formerly NaturaCell) (60 caps)* EnzyMedica

Stone Free (180 tablets)* Planetary Herbals

Hunger Caps Appetite Control | Saffron Extract (60 capsules)* Re-Body

IP6 Inositol Called a Natural Cancer Fighter
IP6 Inositol Hexaphosphate has been called a "natural cancer fighter" and scientific studies suggest that it slows or reverses the growth of various forms of cancer, including breast, colon, and prostate cancers.

Bile Acid Factors (333 mg 90 capsules) Jarrow Formulas

Nutritional Yeast Powder (10 oz) NOW Foods

Ultra Jarro-Dophilus (60 capsules)* Jarrow Formulas

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

Could Chelation Be The Answer To Defeating Autism?
Modified Citrus Pectin and Alginates are all-natural products that work in a very unique way to both chelate and eliminate heavy metals from the body.

Estroven Maximum Strength Plus Energy (28 caplets) Amerifit

Pectasol-C Modified Citrus Pectin | From Fruit Peel to Cancer Fighter
PectaSol-C Modified Citrus Pectin is the most effective product available for comprehensive, natural cellular health support. Dr. Isaac Eliaz, founder Econugenics.

Life Extension Mix Tablets (315 tablets)* Life Extension

Best Fucoidan 70% Brown Seaweed (60 vegi capsules) Doctor's Best

Cellfood Essential Silica (4 oz)* Lumina Health

Bryonia alba 9C Boiron

Best Serrapeptase (40,000 Units - 270 capsules) Doctor's Best

Mega Nutrient | Nature’s Way Alive Multivitamin
Alive Multi Vitamin from Nature's Way is the complete daily multivitamin containing the best ingredients from whole-food sources.

Borage Oil (60 soft gels) Barleans Organic Oils