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

Stone Free (180 tablets)* Planetary Herbals

Sinucare (30 soft gels) Terry Naturally

Cellfood Essential Silica (4 oz)* Lumina Health

Bioactive Cranberry CranRx (500 mg|30 Vcaps) Nature's Way

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

BetaMax 250 mg (120 caps) Chisolm Biological Laboratory

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

Fresh Green Black Walnut Wormwood Complex (2 oz) NOW Foods

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

Elderberry-Syrup | Effective Cold and Flu Remedy
Elderberry-Syrup Encourages Healthy Upper Respiratory and Enhances Overall Immune Functions.

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.

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!

GSE Grapefruit Seed Extract Defense Plus (90 Tabs) NutriBiotic

Sleep Tonight (28 Tabs) Enzymatic Therapy

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

Bryonia alba 9C Boiron

Lipotropic Complex (180 Tabs) Nature's Life

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.

Bone-Up (240 capsules) Jarrow Formulas

Floralax All Natural Fiber Formula (7.1 oz) Flora

Intestinal Movement Formula (50 vegan capsules)* HealthForce Nutritionals

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.

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

Intestinal Movement Formula (120 Vcaps)* HealthForce Nutritionals

Life Extension Mix Tablets (315 tablets)* Life Extension