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?

Blood Builder (90 tabs)* MegaFood

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

Sinucare (30 soft gels) Terry Naturally

Ozonated Jojoba Oil (2 oz / 59 ml) purO3

L-Arginine (1600 mg 3.53 oz)* Source Naturals

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

AdrenaSense (120 vegetarian capsule)* Natural Factors

Krill Oil (60 softgels) Jarrow Formulas

Infection Formula (100 Caps) Christophers Original Formulas

PGX Daily Singles (30 packets)* Natural Factors

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

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.

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

Cellfood Essential Silica (4 oz)* Lumina Health

Added Attention (16 fl.oz.) Buried Treasure

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.

Prostasol (80 caps)* Seacoast Natural Health

Ideal Bowel Support 299v (30 vcaps) Jarrow Formulas

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.

Metaburn Weight Loss and Fat Burner (60 tablets)* Roex

Biotivia | Transmax |Potent Resveratrol Supplements
Biotivia Transmax rated best resveratrol supplement by Men's Health Magazine. On Sale. Lowest Price. Too Low to be advertised. orders@seacoastvitamins.com contact us today!

MicroLingualâ„¢ Technology by Superior Source Vitamins
Superior Source Vitamins is the #1 Alternative to Hard to Swallow Pills and Capsules

Steel Libido for Women (75 softgels)* Irwin Naturals

Zyflamend | New Chapter Zyflamend Side Effects
Zyflamend Bonus Pack

Laxative Homeopathic Oral Spray Liddell (Liddel)

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.