L-tyrosine is an amino acid that 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 may be improved. The conversion step from L-tyrosine to norepinephrine may be enhanced cofactor vitamins B6 and C are consumed with L-tyrosine.
L-tyrosine also acts as a precursor to thyroid hormones, enkephalins and melanin.
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-tyrosine.
Serving Size 1 tablet | Servings Per Container 100 | | Amount Per Serving | L-tyrosine | 500 mg | Calcium
| 157 mg | Other ingredients: dibasic calcium phosphate, sorbitol, stearic acid, colloidal dioxide, magnesium stearate, modified cellulose gum.
| This product contains NO sugar, yeast, wheat, gluten, corn, soy or dairy. Contains NO artificial color, sweeteners, flavors or preservatives. |
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| Dosage and Use |
- Suggested dose is 500 to 1000 mg in the morning or afternoon.
- 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.
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| Caution |
Cancer patients should avoid taking L-phenylalanine and L-tyrosine. Certain cancers, such as melanoma, depend on these amino acids to fuel their growth. Supplemental use of L-phenylalanine and L-tyrosine may raise or normalize blood pressure. Insomnia may occur from over-stimulation if taken too close to bedtime. Individuals with the rare metabolic disorder phenylketonuria should avoid phenylalanine. Those suffering from migraine headaches should also avoid L-phenylalanine and L-tyrosine because they form tyramine, a substance that may trigger migraines. |
