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Products
Pill Size
Dl Phenylalanine 500 Mg 100 Capsules
units Non-members Members Members
1was $18.75
now $16.88
was $14.06
now $12.66
4was $16.00
now $14.40
was $12.00
now $10.80

D,L-Phenylalanine Capsules
500 mg, 100 capsules
Item Catalog Number:
00034

L-phenylalanine is an essential amino acid that can be converted to L-tyrosine by a complex biochemical process which takes place in the liver.

L-tyrosine can be converted by neurons in the brain and in the adrenal medulla of the adrenal glands to dopamine, norepinephrine (noradrenaline), and epinephrine hormones that are depleted by stress, overwork and certain drugs. By replenishing norepinephrine in the brain, mental energy levels are enhanced and a feeling of contentment often occurs. Because of the liver conversion necessary for L-phenylalanine to have these effects, L-tyrosine is often faster acting. In addition, the conversion step from L-tyrosine to norepinephrine may be enhanced if the co-factors (vitamins B6 and C) are included.143-150

Cells in the adrenal medulla synthesize and secrete norepinephrine and epinephrine. Since both norepinephrine and epinephrine can cause smooth muscle (arterial) contraction, care with blood pressure should be taken when supplementing with L-phenylalanine or L-tyrosine.

L-tyrosine is also a precursor of two thyroid hormones.

Those who supplement with NAC should drink six to eight glasses of water daily to prevent cysteine renal stones. Cysteine renal stones are rare but do occur.

References
Supplement Facts

Serving Size 1 capsule

Servings Per Container 100

Amount Per Serving

D,L-phenylalanine

500 mg

Other ingredients: gelatin, vegetable stearate.

This product contains NO milk, egg, fish, peanuts, crustacean shellfish (lobster, crab, shrimp), soybeans, tree nuts, wheat, yeast, gluten, corn, or rice. Contains NO sugar, and no artificial sweeteners, flavors, colors, or preservatives.

Dosage and Use

Take one capsule daily on an empty stomach in the morning, or as recommended by a healthcare practitioner.

Best utilized if taken with the co-factors vitamins B6 and C.

Caution

May cause anxiety, high blood pressure, and headache. Do not use if you have phenylketonuria. Do not use phenylalanine or tyrosine if you have cancer or muscular dystrophy. Because phenylalanine can elevate blood pressure in hypertensives, consult your healthcare practitioner if you have hypertension. Insomnia may occur from overstimulation if taken too close to bedtime.

Warnings
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*These statements have not been evaluated by the FDA. These products are not intended to diagnose, treat, cure, or prevent any disease. The information provided on this site is for informational purposes only and is not intended as a substitute for advice from your physician or other health care professional or any information contained on or in any product label or packaging. You should not use the information on this site for diagnosis or treatment of any health problem or for prescription of any medication or other treatment. You should consult with a healthcare professional before starting any diet, exercise or supplementation program, before taking any medication, or if you have or suspect you might have a health problem. You should not stop taking any medication without first consulting your physician.