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Source Naturals

DLPA, 750 mg, 60 Tablets

4.6 · 975 reviews
1,466 ₽

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.

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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.

Customer reviews

5.0
verified purchase
DLPA for chronic pain relief

Phenylalanine is classified as an essential amino acid which must be obtained from diet and is required for the production of dopamine and norepinephrine. The benefits of using this supplement were improvement in my low mood symptoms, increased energy which helped me in training, and increased tolerance to pain and stress. The quality of ingredients is superior and the size of the pill is small. There is no taste in these pills. It is composed of both D and L form of phenylalanine which increased my endorphin levels and is also energizing.

9/15/2024
5.0
verified purchase

I've been using Source Naturals' DLPA pills for a few weeks now, and they've been a true asset in my journey to manage anxiety and depression. The change I've noticed in my mood and outlook is quite remarkable. These pills have helped lift my spirits and bring a cheerful vibe even on tough days. As someone who's tried various supplements, DLPA stands out as a reliable option. I'm glad to see a product that genuinely resonates with consumers seeking positive changes in their emotional well-being.

8/26/2023
5.0
verified purchase
DLPA for managing stress and energy improving

The benefits of DLPA are that it increases levels of endorphins -our body's natural painkiller, dopamine, and norepinephrine. Raised endorphin levels are what calm you down after an upset, too, forcing a 50 per cent drop in cortisol, your most powerful stress hormone. The size of the tablets is small and the ingredients are top-notch

8/31/2024
5.0
verified purchase
DLPA for energy and mood support

The composition of DLPA is D-phenylalanine and L-phenylalanine (found in protein-rich foods), which has benefits such as producing neurotransmitters- endorphins, dopamine, adrenaline, noradrenaline. The quality of these supplements is superlative and the size is large. There is no taste in these supplements and I am supplementing them as I am unable to get it from my diet.

9/5/2025
5.0
verified purchase
DLPA

DLPA is just a must-have; it's always good for increase in energy and focus, plus it crosses the BBB better and has better bioavailability due to the 'D' partof it

8/15/2025
5.0
verified purchase
A surprising mood and body boost

I started taking this a few weeks ago to help with that flat, dreary feeling you get at the tail end of a Melbourne winter. I was hoping for a bit of a mood lift, which I definitely got. But what really surprised me is that my joints seem less stiff and achy in the cold weather too. It's just a subtle feeling of being more comfortable and positive. A really great product that's helped more than I expected.

8/3/2025
5.0
verified purchase
My go to

This package is my DLPA go to, dlpa is the amino acid (building block for protein) which might supports muscle but the thing is, dlpa can be used for sensitivity as per Julia Ross and her book if you've read it, and it can be used as dopamine building block which might be seen as energy

3/30/2026
5.0
verified purchase
Good for energy

I felt a cognitive boosts, the tablets are a little hard to swallow, didnt get again but its worth a try

11/14/2025
5.0
verified purchase
DLPA to increase endorphins and resilience to stress

DLPA supplement benefits are that it inhibits enzymes that breakdown endorphins. It's a composition of two forms of amino acids D phenylalanine and L phenylalanine. The size of these supplements is big and the quality is excellent for the price. There is no taste in these pills. The package contains 60 tablets and the ingredients are in free form. If you are constantly fatigued and not getting enough protein from your diet then supplementing with DLPA will help with your energy and mental alertness

9/2/2025
5.0
verified purchase
Energy Booster

Great benefit adding this to my health diet supplements! I'm suffering multiple medical issues & even my doctor couldn't help me with Energy etc. I highly recommend to add this ingredient! No taste, muscles feeling stronger also. great quality!

8/26/2025