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Focus DL Review – Is it Effective?

By Sasha de Beausset Aparicio, MSc

Reviewed by Rebecca Williams, MD, MA, MB, BChir

Last Updated:

Evidence Based | Synopsis | Ingredients | Health Benefits | Cautions | Directions | Does it Work

Focus DL delivers DL-phenylalanine, allowing consumers to fine-tune therapeutic regimens. DL-phenylalanine is the precursor to many essential neurotransmitters, including dopamine, norepinephrine, PEA, and epinephrine. This product is designed and manufactured by “NeuroScience,” who recommends their product to support focus, memory and metabolic maintenance.

NeuroScience, Inc. has developed a line of nutraceutical formulas that specifically target the neurotransmitter balances in the brain. Their unique combinations of neurotransmitter precursors, enzymatic cofactors and modulators provide useful options for many of today’s most common brain conditions.

They’re also the company behind the mood-enhancer Serene.


1) Focus DL at a Glance

DL-Phenylalanine is a neutral amino acid,; it can cross the blood-brain barrier and enter into the central nervous system quite efficiently. This happens after the amino acid is absorbed through the intestines and undergoes a conversion process within the liver. From there, it reaches the brain and performs several actions in the body. It exerts a powerful influence throughout the central nervous system, especially in regards to mood and movement. It packs a peak performance punch by rapidly releasing acetylcholine, serotonin, dopamine, and norepinephrine into your limbic system. The result is better concentration, improved alertness, and a better memory.

Another way in which this amino acid is thought to work is by the blocking of a particular enzymatic process. This is also believed to relate to the increased levels of norepinephrine and dopamine that are seen when using DL-Phenylalanine.

Focus DL features DL-phenylalanine, an essential amino acid that is not produced by the body and can only be obtained from the diet. DL-phenylalanine is the precursor to catecholamines like norepinephrine, epinephrine, dopamine, and PEA. DL-phenylalanine is commonly used to reduce the symptoms of fatigue and brain fog while increasing energy.

PEA, an excitatory neurotransmitter, is linked to focus, concentration and memory. Low levels of PEA may cause decreased energy, inattention, racing thoughts and memory problems. Supplementing with Focus DL provides the body with the building blocks (essential amino acids) needed to increase PEA production. Increase in PEA production may provide increased focus and energy.


2) Focus DL Ingredients

Focus DL contains the following ingredients: DL-phenylalanine 1g.

Health Benefits

3) Focus DL Health Benefits

  • Helps support healthy catecholamine levels, enhance PEA (phenylethylamine) levels, and promotes mental clarity.
  • Users report that Focus DL can be an effective supplement to fight against the attention deficit and mood swings.
  • Supports healthy catecholamine levels for improved mental performance.

4) What You Need to Know Before Taking Focus DL

  • Using this product, only mild side effects having been reported such as heart burn, nausea, and headaches.
  • It can cause over stimulation in patients with anxiety issues and who are currently on other medications that support excitatory neurotransmitters.

5) Focus DL Directions

The daily recommended dose of this essential amino acid is once or twice a day before a meal. It is advised to carefully read all of the instructions so that the recommended dose isn’t exceeded.

Does it Work

6) Bottom Line – Does It Really Work?

Focus DL features DL-phenylalanine to naturally boost your levels of dopamine, norepinephrine, epinephrine, and PEA; all the essential neurotransmitters and major players in supporting your mental focus, memory and overall feelings of well-being. It can be an effective supplement with a broad range of benefits for people suffering from stress, anxiety and mood swings. It also offers a number of positive effects related to focus, energy levels, and motivation.

3/5 - (11 votes)
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