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Mental alertness support; Comfort-related signaling support
Adults seeking support for mental alertness or comfort-related signaling from amino acid precursors.
Take 1 tablet 1 to 3 times daily; if you have high blood pressure, take after meals. Amino acid supplements are often taken away from large protein meals, but follow your personal tolerance.
Contains phenylalanine.
D-phenylalanine is studied for inhibiting enzymes that break down endorphins and enkephalins, which may help maintain levels of these comfort-related peptides.
Caution: Avoid if taking MAO inhibitors or SSRI medications because combining may affect neurotransmitter balance.
L-phenylalanine serves as a precursor to tyrosine and catecholamine neurotransmitters like dopamine and norepinephrine, which are involved in alertness.
Caution: Not for people with phenylketonuria or those who are pregnant or breastfeeding due to increased phenylalanine load.
Calcium supports normal nerve transmission and muscle function as an essential mineral and cellular messenger.
Caution: Take with food if you experience stomach discomfort, as minerals can sometimes cause mild gastrointestinal upset.
The D-form may help maintain levels of endorphins and enkephalins by slowing their breakdown, influencing comfort signaling. The L-form provides building blocks for catecholamine neurotransmitters, which are linked to alertness. Together, they address both peptide and neurotransmitter pathways related to how the body perceives comfort and readiness.
Label Warning: Contains phenylalanine. Do not use if you have phenylketonuria. Not for use if you are pregnant, may become pregnant, or breastfeeding. Do not use with antidepressant drugs containing MAO inhibitors or SSRIs. If you have chronic high blood pressure, take after meals and/or consult a healthcare professional.
Who should be cautious: People with high blood pressure, mood concerns, or those sensitive to stimulants may need caution. Those taking antidepressants, including MAO inhibitors or SSRIs, should discuss with a healthcare provider before use. Individuals with a history of phenylketonuria should avoid this product.
Many users mention improved mood, clearer focus, and better mental energy.
Several reviewers report reduced muscle soreness and general physical discomfort.
Some users did not notice clear effects, and a few found the tablets harder to swallow.
This product is guaranteed authentic and backed by our easy returns & refunds policy. Details
Focus & Memory Formulas may enhance mental clarity, working synergistically with L-Phenylalanine's potential cognitive benefits.
AI generated. Not medical advice.
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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.
1 tablet 1 to 3 times daily.
Dibasic calcium phosphate, microcrystalline cellulose, stearic acid, sorbitol, hydroxypropyl cellulose, magnesium stearate, silica, 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.
While iHerb strives to ensure the accuracy of its product images and information, some manufacturing changes to packaging and/or ingredients may be pending update on our site. Although items may occasionally ship with alternate packaging, freshness is always guaranteed. We recommend that you read labels, warnings and directions of all products before use and not rely solely on the information provided by iHerb.
| Supplement facts | ||
| Serving Size: 1 Tablet | ||
| Amount Per Serving | %DV | |
| Calcium (as dibasic calcium phosphate) | 52 mg | 4% |
| DL-Phenylalanine | 750 mg | † |
| †Daily Value not established | ||
