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?

Skin Restoring Phytoceramides with Lipowheat (30 veggie liquid caps)* Life Extension

PRID (18 g) Hylands

Sambucol Cold & Flu Fighter
Sambucol. World renowned original formula, clinically tested, virologist developed. Boost immunity. Unique black elderberry extract rich in immune supporting flavonoids. Cold & Flu Season Special.

Living Green Liquid-Gel Multi for Women (90 softgels)* Irwin Naturals

Progesta-Care Calming Lavender Life-flo

Phenocane Curcumin (120 capsules) OxyLife

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.

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.

Ultra Jarro-Dophilus (60 capsules)* Jarrow Formulas

Intestinal Movement Formula (120 Vcaps)* HealthForce Nutritionals

Blood Builder (90 tabs)* MegaFood

Bone Renewal (150 capsules)* The Synergy Company

Revivin (350mg 120 capsules) Chi's Enterprise

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

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

Borage Oil (60 soft gels) Barleans Organic Oils

Bone-Up (240 capsules) Jarrow Formulas

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.

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

ProOmega Junior (90 Soft Gels)* Nordic Naturals

Staphysagria 9C Boiron

MicroLingual™ Technology by Superior Source Vitamins
Superior Source Vitamins is the #1 Alternative to Hard to Swallow Pills and Capsules

Zyflamend | New Chapter Zyflamend Side Effects
Zyflamend Bonus Pack

AdrenaSense (120 vegetarian capsule)* Natural Factors

Iberogast | Digestive Relief with Iberis Amara | Clown’s Mustard
Iberogast Original Formula Every Day Lowest Price 40% Discount Seacoast Vitamins Direct Price.

Rescue Remedy 20ML Bach