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.
D,L-phenylalanine is a 50/50 mixture of its two stereoisomers.
Serving Size 1 vegetarian capsule
Amount Per Serving
- D,L-phenylalanine 500 mg
- Other ingredients: vegetable cellulose (capsule), vegetable stearate, microcrystalline cellulose.
Take one (1) capsule daily, or as recommended by a healthcare practitioner.
This product is best utilized if taken early in the day on an empty stomach.
If excitation, restlessness, muscle tension, or headache occurs, reduce dosage or discontinue use.
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