L-Tyrosine
How to Use It
Most people should not supplement with L-tyrosine. Some human research with people suffering from a variety of conditions used 100 mg per 2.2 pounds of body weight, equivalent to about 7 grams per day for an average-sized person. The appropriate amount to use in people with PKU is not known, therefore, the monitoring of blood levels by a physician is recommended.
Where to Find It
Dairy products, meats, fish, wheat, oats, and most other protein-containing foods contain tyrosine.
Possible Deficiencies
Some people affected by PKU are deficient in tyrosine. Tyrosine levels are occasionally low in depressed people.15 Any person losing large amounts of protein, such as those with some kidney diseases, may be deficient in a few amino acids, including tyrosine.16
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The information presented in Aisle7 is for informational purposes only. It is based on scientific studies (human, animal, or in vitro), clinical experience, or traditional usage as cited in each article. The results reported may not necessarily occur in all individuals. For many of the conditions discussed, treatment with prescription or over the counter medication is also available. Consult your doctor, practitioner, and/or pharmacist for any health problem and before using any supplements or before making any changes in prescribed medications. Information expires June 2013.
