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D,L-Phenylalanine Capsules 500 mg -
100 caps, (Life Extension)
L-phenylalanine is an essential amino acid which 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 to dopamine and norepinephrine (noradrenaline), hormones which 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 cofactors (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 L-phenylalanine or L-tyrosine.
L-tyrosine is also a precursor of two thyroid hormones. D, L-phenylalanine is a 50/50 mixture of its two stereoisomers.
SUGGESTED USAGE
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 abnormal cell growth 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.
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Retail Price: $18.75
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D,L-Phenylalanine Capsules 500 mg -
100 caps, (Life Extension)
| | | **Daily Value not yet established. | |
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D,L-Phenylalanine Capsules 500 mg -
100 caps, (Life Extension)
Editor's rating: 0 out of 10
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USER'S OPINION
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D,L-Phenylalanine Capsules 500 mg -
100 caps, (Life Extension)
GUARANTEE/ SHIPPING INFORMATION
D,L-Phenylalanine Capsules 500 mg - is shipped in a discrete, unmarked package. Orders are processed immediately and usually take about 3 to 5 working days to be received. We do ask that you try it for 2 to 3 weeks to feel the full effects. Any information received is used only for order processing and shipping purposes. Your information, such as e-mail address, will never be disclosed to a third party.
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D,L-Phenylalanine Capsules 500 mg -
100 caps, (Life Extension)
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D,L-Phenylalanine Capsules 500 mg -
100 caps, (Life Extension)
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