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Source Naturals, DLPA, 750 mg, 60 Tablets

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In Stock
  • Expiration Date: May 2020
  • Shipping Weight: 0.24 lbs (0.11 kg)
  • 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)
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.

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

Makes me drowsy

Posted by CurbAnxiety on Dec 04, 2016

Alert my butt! This product makes me drowsy each and every time I take it so no thanks, not for me anymore!

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Bang for the Buck!

Posted by 4660261427926528629 on Jun 17, 2016

Works like a charm. Two pills feels similiar to adderral! Great boost everyday! Highly recommended.

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DLPA, 750mg

Posted by 5392228285703084765 on May 19, 2016

Good Value

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Posted by 5315301008087702824 on Dec 11, 2015

Excellent love it b

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Depression killer

Posted by 5207434374387163051 on Jul 03, 2015

It's amazing what it does to my depression. It is a few days away! Let's hope it stays away .....

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