DL- Phenylalanine, or DLPA, is a 50/50 blend of the D- and L- forms of the amino acid phenylalanine (phenylalanine is one of the few amino acids that can be utilized in its D- form). Researchers believe 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 discomfort. By obstructing the action of this enzyme, DPA may extend the life of endorphins and enkephalins, and their positive influence on comfort levels. L-Phenylalanine is the precursor to two neurotransmitters that help support an alert state.*

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DLPA (Source Naturals) - Average rating 5 (1 review)  - Write a review Show Reviews Reviews (1) (0) (0) (0) (0)   April 17, 2012 Reviewer: julie in Indiana I have been using dlpa for my old dog. She is going down in the back end and this product is helping her stay up. She is also on an anti-inflammatory, but with this addition, she is more mobile. Was this review helpful to you? Yes  No

231-0022 Source Naturals DLPA, DL-Phenylalanine, 750mg 60 tablets Nutrition Facts Serving Size: 1 Tablet Servings Per Container: 60 Amount Per Serving % Daily Value* Calcium 54  mg 5%    DL-Phenylalanine 750  mg   *Percent Daily Values are based on a 2,000 calorie diet. 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 amino acids 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 discomfort. By obstructing the action of this enzyme, DPA may extend the life of endorphins and enkephalins and their positive influence on comfort levels. L-Phenylalanine is the precursor to two neurotransmitters that help support an alert state.   Other Ingredients: dibasic calcium phosphate, stearic acid, sorbitol, magnesium stearate, colloidal silicon dioxide, and modified cellulose gum. Recommended Use: 1 to 3 tablets daily. Warning: Contains phenylalanine. Not to be used by phenylketonurics, women who are pregnant, may become pregnant, or breastfeeding, or with antidepressant drugs containing MAO or SSR inhibitors. If you have chronic high blood pressure, take after meals and/or consult your health care professional. Do not use if either tamper-evident seal is broken or missing. Keep out of reach of children. Before beginning any program of weight loss, consult your health care practitioner. These statements have not been evaluated by the FDA. This product is not intended to diagnose, treat, cure or prevent any disease. PHENYLKETONURICS: Contains Phenylalanine. If you notice any errors in the information above, please let us know. If you have further questions about this product, please contact Source Naturals at (831) 438-1144 The nutrition facts listed above are supplied as a courtesy to our customers. The nutrition facts were current and accurate to the best of our knowledge at the time they were entered. Manufacturers often change formulas or ingredients without notifying us. We do our best to keep them as up to date as possible, however Netrition.com will not be held responsible for any differences between what is listed on our web site and what is listed on the product that you receive. If you need to be 100% certain of the ingredients currently being shipped, we recommend that you call or email our customer service department to check the shelf of current stock.