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Source Naturals DLPA DL-Phenylalanine 375 mg tablets- DL-Phenylalanine, or DLPA, is a 50/50 mixture of the D- and L- forms of the amino acid phenylalanine (phenylalanine is one of the few aminos that can be utilized in its D- form).
- Researchers believe that D-phenylalanine (DPA) inhibits the action of an enzyme that breaks down endorphins and enkephalins.
- These are proteins which bind to opiate receptor sites in the brain, thereby influencing the perception of minor discomfort associtated with normal physiological processes.
- By obstructing the action of this enzyme, DPA may extend the lifeof endorphins and enkephalins.
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Supplement Facts:

Dibasic calcium phosphate, sorbitol, stearic acid, magnesium stearate, colloidal silicon dioxide, and modified cellulose gum.
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1 to 2 tablets, 1 to 2 times daily.