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Source Naturals, DLPA, 750 mg, 60 Tablets

By Source Naturals

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  • Product Code: SNS-00165
  • UPC Code: 021078001652
  • Package Quantity: 60 Tablets
  • Dimensions: 2 x 2 x 3.6 in, 0.2 lbs (0.09 kg)
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Product Overview

  • Dietary Supplement
  • DL-Phenylalanine
  • Supports an Alert State

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 that bind to opioid 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.

Suggested Use

1 to 3 tablets daily.

Other Ingredients

Dibasic calcium phosphate, stearic acid, sorbitol, magnesium stearate, colloidal silicon dioxide and modified cellulose gum.


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 the reach of children.

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Supplement Facts
Serving Size: 1 Tablet
  Amount Per Serving %DV
Calcium 54 mg 5%
DL-Phenylalanine 750 mg
†Daily Value not established

iHerb Customer Reviews

5 Stars
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1 Stars

Really helps my Fibromyalgia Symptoms

Posted by Reviewer3141880 on Oct 09, 2012

I found this product on Iherb and thought I would give it a try. I am on my 4th day with Source Naturals DLPA, and it has helped ease my Fibromyalgia pain and depression. It has also helped curb my appetite, which I also find helpful since I need to lose some weight.

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9 people found the following review helpful


Posted by Reviewer2547339 on Oct 19, 2007

I have been getting DLPA from I-Herb for a while now and find that it does indeed help with my mind's control of pain and an all over joint relaxing feeling.

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8 people found the following review helpful

Source Naturals DLPA

Posted by Reviewer1385656 on Feb 17, 2008

I love this stuff! I started using DLPA quite a few years ago for pain. I've never switched brands, but tried not taking it for awhile and after two weeks, could hardly walk. As soon as I started taking it again, the pain subsided. You hear a lot of bad things about phenylalanine, but I can't live without this stuff!

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8 people found the following review helpful


Posted by Reviewer1866677 on Dec 19, 2009

I've taken adderral xr 15 mg on and off for a few years, and 2 of these, for me - just as effective.

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8 people found the following review helpful

Hey! This placebo actually works!

Posted by adespoz on Apr 05, 2012

I do feel that this product supports my mood and energy levels. I often need to take Tramadol for pain and the DLPA seems to potentiate it- so I don't have to take as much medication as I would normally. If DLPH really does 'inhibits the action of an enzyme that breaks down endorphins' then I'm all for it. Mood is a fickle beast, and anything that helps stabilise it is worth the price. And the price of this product is is very reasonable! Recommended.

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6 people found the following review helpful

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