UPDATED 09/17/2016

DLPA (DL-Phenylalanine) Review
DLPA (DL-Phenylalanine) Review

PUBLISHED: 07/04/2016 by BR Publishing
Editor's Review: 2.4/5.0
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DLPA (DL-Phenylalanine)

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DLPA (DL-Phenylalanine) is a supplement with two versions of phenylalanine, an amino acid that’s important for maintaining a healthy lifestyle. DLPA promises to help with your nervous system, mood, endocrine system, and more. It’s put together by Carlson Laboratories, which was created more than fifty years ago in Chicago. Sometime after 1965 they expanded into the city suburbs, and have been there ever since. They offer more than 250 supplements for a variety of dietary needs, including vitamins and fish oils. Their entire process is transparent and well-documented.


DLPA (DL-Phenylalanine) contains the following ingredients: DLPA (DL-Phenylalanine), Magnesium Stearate, Beef Gelatin Capsule

Product Features

Each capsule contains 500 mg of DL-phenylalanine, a combination of L-phenylalanine and D-phenylalanine. L-phenylalanine is an essential amino acid and generally considered the better half of this formula. It’s involved with norepinephrine, dopamine, and L-tyrosine, all the while easily penetrating the blood brain barrier. D-phenylalanine isn’t an essential amino acid and can help with alcohol withdrawal, arthritis, and Parkinson’s disease.

One source noted that with amino acid supplements, it’s best to take them on an empty stomach with water or juice, an hour before your next meal. Certain high protein foods may interfere with the absorption of DL-phenylalanine, mostly because L-phenylalanine is found is many high protein foods. It’s in milk, eggs, chicken, beef, spinach, tofu, and more.

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  • Phenylalanine is an essential amino acid that the human can’t effectively produce on its own, so a supplement may be helpful for some people. It’s found in a lot of foods but vegans don’t eat most of them.
  • May improve your mood and cognitive function, and 500 mg is likely a good dose for this, as it’s well inside the safe zone. The most common serving size is between 100 and 500 mg daily, depending your needs.


  • L-phenylalanine is found in commonly eaten foods so it’s unlikely people will need a supplement for it, a similar situation to Omega-6s. D-phenylalanine is made in laboratories and can have benefits, but it’s not usually considered as important as L-phenylalanine. In some studies, DL-phenylalanine was less effective than just L-phenylalanine or just D-phenylalanine.
  • Some people want to use DLPA for treating pain, but there isn’t any good research to support the idea that DL-phenylalanine is effective in treating pain. It’s often considered no better than a placebo, which explains why some people think DLPA works for them.


DLPA promises a lot but the effects aren’t too clear. There isn’t much research on the benefits and potential side effects of DL-Phenylalanine supplements. Some people might find this product useful, while others won’t see any upsides. It’s best to ask your doctor about DLPA before deciding to purchase it. If you do go ahead with DLPA, it’s very inexpensive and from a reputable company, so it’s likely that you’ll enjoy what DLPA has to offer. Some companies use DL-phenylalanine as part of an effective nootropic stack, although on its own your results may vary. Your mood may improve, but DL-phenylalanine might be most effective with other ingredients too.

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DLPA (DL-Phenylalanine) ReviewBR Publishing2.52016-09-17 08:33:09
DLPA (DL-Phenylalanine) Review
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