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?

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.

Life Extension Mix Tablets (315 tablets)* Life Extension

Infection Formula (100 Caps) Christophers Original Formulas

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.

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

Celery Seed Health Benefits
Celery Seed Extract is widely used as an effective diuretic, as well as a dietary supplement to help improve circulation and heart health.

Ignatia amara 9C Boiron

Happy Camper, 120 Veggie Caps Natural Balance

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.

Cell Forte Max3 (120 Vcaps) Enzymatic Therapy

AnxioCalm (45 tablets) Terry Naturally

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

Garcinia Cambogia Extract 50% HCA (90 v-caps) Top Secret Nutrition

PRID (18 g) Hylands

Mangosteen High Potency Xanthones (650 mg, 60 vcaps) Fruitrients X

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

PGX Daily Ultra Matrix (120 Softgels)* Natural Factors

System-Six, Powerful Weight Loss Support (100 softgels) Irwin Naturals

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

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

Folic Acid from Lemon Peel (120 vtabs) Futurebiotics

40,000 Volts (8 oz) Trace Mineral Research

Blood Builder (90 tabs)* MegaFood

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!

Borage Oil (60 soft gels) Barleans Organic Oils

Bile Acid Factors (333 mg 90 capsules) Jarrow Formulas