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?

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

Vitamin A Palmitate (120 soft gels 15000 IU)* Carlson Labs

Estroven Maximum Strength Plus Energy (28 caplets) Amerifit

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.

Blood Builder (90 tabs)* MegaFood

BetaMax 250 mg (120 caps) Chisolm Biological Laboratory

Ultra Bone-Up (120 tablets) Jarrow Formulas

Zyflamend | New Chapter Zyflamend Side Effects
Zyflamend Bonus Pack

Leg Veins (120 Vcaps)* Nature's Way

Curamin (120 Caps) Terry Naturally

Best Collagen Types 1 & 3 Powder (200 gr) Doctor's Best

Bone Renewal (150 capsules)* The Synergy Company

Cilantrol (1 oz) North American Herb and Spice

Steel Libido for Women (75 softgels)* Irwin Naturals

Borage Oil (60 soft gels) Barleans Organic Oils

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.

Betaine HCI (120 Caps) NOW Foods

IP6 Gold Inositol Powder (14.6oz)* IP6 International

Preg-Natal (180 tablets) Jarrow Formulas

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

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

Green Phytofoods Powder (2 lb) NOW Foods

MacuGuard Ocular Support with Saffron (60 softgels)* 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.

Folic Acid from Lemon Peel (120 vtabs) Futurebiotics

Raspberry Ketone Rapid Weight Loss Catalyst (100 mg, 2 oz) Essential Source