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Life Extension, D, L-Phenylalanine, 500 mg - 100 vegetarian capsules

  • $18.99
  • $17.99

The Best But how do you choose the very best nutritional supplements or even know what's in them? Our focus is on quality, purity, potency. Shouldn't that be your focus, too? Our quality control standards actually exceed FDA mandates. We source only the best raw materials for our nutritional supplements. Our products always give you the most nutritional potency for your dollar. We develop science-based supplements you simply won't find anywhere else.

  • Foundation for Longer Life
  • Enhances Mood
  • Dietary Supplement

L-phenylalanine is an essential amino acid that can be converted to L-tyrosine in the liver. L-tyrosine can be converted in the brain and in the adrenal glands to dopamine, norepinephrine, and epinephrine (adrenaline) 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. The conversion step from L-tyrosine to norepinephrine may be enhanced if the co-factors (vitamins B6 and C) are included.

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 tyrosine.

D, L-phenylalanine is a 50/50 mixture of its two stereoisomers.

Suggested Use Read the entire label and follow the directions carefully prior to use. Take one (1) 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.

Supplement Facts
Serving Size: 1 Vegetarian Capsules
 Amount Per Serving%Daily Value
D, L-Phenylalanine500 mg**
**Daily Value not established.

Other Ingredients

Vegetable cellulose (capsule), microcrystalline cellulose, vegetable stearate.

Warnings

Store tightly closed in a cool, dry place.

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.

  • Keep out of reach of children.
  • Do not exceed recommended dose.
  • Do not purchase if outer seal is broken or damaged.
  • When using nutritional supplements, please consult with your physician if you are undergoing treatment for a medical condition or if you are pregnant or lactating.

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