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Product Description
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-phenylalanine is unique among amino acids because the D-form (normally not found in life) has biological activity that is different from its L-stereoisomer. D, L-phenylalanine is a 50/50 mixture of the two stereoisomers.
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-phenylalanine is unique among amino acids because the D-form (normally not found in life) has biological activity that is different from its L-stereoisomer. D, L-phenylalanine is a 50/50 mixture of the two stereoisomers.
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Supplement Facts Serving Size: 1/2 Level Teaspoon (1.38 g) Servings Per Container: 72 |
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| Amount Per Serving | % Daily Value* | |||
| Vitamin C (s magnesium ascorbate) | 500 | mg | ** | |
| Magnesium (as magnesium ascorbate) | 38 | mg | ** | |
| Vitamin (pyridoxine HCl) | 100 | mg | ** | |
| L-Tyrosine | 700 | mg | ** | |
| *Percent Daily Values are based on a 2,000 calorie diet. | ||||
| **Daily Value not established. | ||||
Other Ingredients:
none.Additional Information
| Weight | 0.4000 |
| Product Notes | This product contains NO sugar, yeast, wheat, gluten, soy or dairy. Contains NO artificial color, sweeteners, flavors or preservatives. |
| Suggested Use | • Suggested dose is 500 to 1000 mg in the morning or afternoon. • More may be necessary for depression or pain. • These products are best utilized when taken on an empty stomach mixed with juice or water. • Adequate cofactors (vitamins B6 and C) should also be taken if not included with the product. |
| Product Warnings | Caution: May cause anxiety, high blood pressure, and headache. Do not use if you have phenylketonuria. Persons with hypertension should use L-Tyrosine with caution because it can elevate blood pressure in hypertensives. Cancer patients should avoid taking extra Phenylalanine and tyrosine because these amino acids can contribute to cancer cell proliferation. Muscular dystrophy patients should avoid both phenylalanine and tyrosine. Insomnia may occur from overstimulation if taken too close to bedtime. Warnings: Keep out of reach of children.Do not exceed recommended dose.If you become ill after taking this product, please consult your physician.Do not purchase if outer seal is broken or damaged.If you have a bad reaction to product discontinue use immediately.When using nutritional supplements, please inform your physician if you are undergoing treatment for a medical condition or if you are pregnant or lactating. |
| Product Size | 100 g |
| UPC | 737870035107 |
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These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure or prevent any disease.
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