L-Phenylalanine 500 mg
NOW
L-Phenylalanine 500 mg
4.5
★ ★ ★ ★ ★
(4315 ratings)
Phenylalanine 500 mg
Score 92.0
NOW L-Phenylalanine 500mg offers a foundational amino acid for brain health and mood support at an excellent price point, backed by a trusted brand.
Quantity: 120 Capsule(s)Servings size: 1 Veg Capsule(s) (120 servings)
Selected goals:
Other goals:
Mood Support
Brain Health
Mental Focus
leaderboard Score 92.0
NOW L-Phenylalanine 500mg offers a foundational amino acid for brain health and mood support at an excellent price point, backed by a trusted brand.
insights Analysis
This L-Phenylalanine supplement by NOW provides a standard 500mg dose of the essential amino acid, which serves as a crucial precursor to various neurotransmitters involved in mood regulation, cognitive function, and mental focus. The product benefits from NOW's strong reputation for quality and affordability, evidenced by its high review count and low price per serving. Its singular ingredient focus makes it a straightforward choice for those looking to supplement L-Phenylalanine specifically.
- Single, well-defined ingredient (L-Phenylalanine) at an effective dose.
- Reputable brand (NOW) known for quality and third-party testing.
- Excellent value with a very low price per serving ($0.05).
- High number of positive reviews (4211) indicates widespread user satisfaction.
- Only provides L-Phenylalanine, not a comprehensive blend if other synergistic nutrients are desired for brain health or complex cognitive issues.
- May not be sufficient for individuals with significant neurotransmitter imbalances without other cofactors like B vitamins or L-Tyrosine.
- Individuals with phenylketonuria (PKU) should strictly avoid L-Phenylalanine as they cannot metabolize it.
- Can interact with certain medications, especially MAOIs and some antipsychotics; consult a healthcare professional before use.
- High doses may cause anxiety, headaches, or gastrointestinal discomfort in sensitive individuals.
$6.90($0.05 per serving)
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bolt Effectiveness for goals
Phenylalanine is an essential amino acid, meaning the body cannot produce it and it must be obtained through diet. Its primary role is as a building block for proteins and as a precursor to several important neurotransmitters. These neurotransmitters include dopamine, norepinephrine, and epinephrine, which are involved in mood, cognition, and stress response.
Phenylalanine is an essential amino acid, meaning the body cannot produce it and it must be obtained through diet. It serves as a building block for proteins and is a precursor to important neurotransmitters like tyrosine, dopamine, norepinephrine, and epinephrine. These neurotransmitters play key roles in mood, cognition, and stress response.
Phenylalanine is converted into tyrosine, which then serves as the direct precursor for the synthesis of dopamine, norepinephrine, and epinephrine. These neurotransmitters are crucial for nerve cell communication, influencing mood, motivation, and alertness. This conversion pathway is a key mechanism for its potential effects on brain function.
Research suggests that Phenylalanine may support mood by increasing the production of neurotransmitters like dopamine and norepinephrine. Some studies have explored its potential in managing mild to moderate depression, though results are mixed and more robust evidence is needed. It is not a replacement for prescribed antidepressants.
Some research suggests that Phenylalanine, by increasing the precursors for dopamine and norepinephrine, may support positive mood and feelings of well-being. However, specific benefits can vary among individuals and are not universally observed in clinical trials. It is not intended to diagnose, treat, cure, or prevent any mood disorders.
schedule Dosage, timing & forms
Yes, Phenylalanine can interact with certain medications, particularly MAO inhibitors, and should be avoided or timed carefully. Taking it alongside other amino acids might compete for absorption, so separating intake times can be beneficial. Always consult a healthcare professional regarding potential interactions and optimal timing.
Typical dosages for L-Phenylalanine vary depending on the intended use and individual needs, often ranging from 500 mg to 1500 mg per day. It is generally advised to start with a lower dose and adjust as needed. Consulting a healthcare professional is recommended for personalized guidance.
While Phenylalanine can be taken with food, its absorption may be less efficient due to competition with other amino acids. For optimal absorption, it is often suggested to take it separate from meals. If stomach upset occurs, taking it with a small, light snack might be an option.
Typical dosages for Phenylalanine supplements can vary widely depending on the form (LPA, DPA, DLPA) and the intended use. For L-phenylalanine, dosages often range from 500 mg to 1500 mg per day. DL-phenylalanine dosages used in studies have ranged from 150 mg to 2500 mg per day. It is important to follow product label instructions or consult a healthcare professional for personalized advice.
Phenylalanine supplements are primarily available as L-Phenylalanine, D-Phenylalanine, and DL-Phenylalanine. L-Phenylalanine is the naturally occurring form, while D-Phenylalanine is a synthetic mirror image, and DL-Phenylalanine is a mix of both. Each form may have slightly different applications.
health_and_safety Safety & interactions
Individuals with the genetic disorder Phenylketonuria (PKU) must strictly avoid phenylalanine supplements and foods high in phenylalanine, as their bodies cannot properly metabolize it, leading to harmful accumulation. People taking certain medications or with specific medical conditions should also consult a healthcare professional. Excessive intake can be problematic for some sensitive individuals.
Individuals with Phenylketonuria (PKU), a genetic disorder that prevents the proper metabolism of Phenylalanine, should strictly avoid Phenylalanine supplements and foods high in this amino acid. Phenylalanine is also not recommended for those taking certain antidepressants (especially MAOIs), pregnant or breastfeeding women, or individuals with high blood pressure or heart disease, unless supervised by a doctor. Always consult a healthcare professional before starting new supplements.
Yes, Phenylalanine can interact with certain medications. It should not be used with MAO inhibitors (MAOIs) due to the risk of a hypertensive crisis. Interactions may also occur with some antipsychotic drugs or levodopa (L-dopa) for Parkinson's disease, potentially reducing their effectiveness. Always consult a healthcare provider if you are taking prescription medications.
Common side effects of Phenylalanine can include headache, heartburn, nausea, and constipation. In some sensitive individuals or at high doses, it may cause anxiety, restlessness, or insomnia. If you experience severe or persistent side effects, discontinue use and consult a healthcare professional.
When taken in recommended amounts, phenylalanine is generally well-tolerated. However, some individuals might experience mild side effects such as nausea, heartburn, or headache. High doses can potentially lead to more severe effects, especially in sensitive individuals. It's important to adhere to suggested dosages.
Ingredients
| Ingredient | Amount per serving |
|---|---|
| L-Phenylalanine | 500 mg |
Categories
Phenylalanine 90.0
This product is a pure L-Phenylalanine supplement with an appropriate and commonly recommended dosage, making it an excellent and straightforward representation within the Phenylalanine collection for its intended uses.
Goals
Mood Support 85.0
L-Phenylalanine is a direct precursor to neurotransmitters like dopamine and norepinephrine, which play vital roles in mood regulation. Many users and studies suggest it can positively influence emotional well-being.
Brain Health 80.0
As a precursor to key neurotransmitters, L-Phenylalanine supports overall brain function by contributing to neurochemical balance. It aids in the synthesis of compounds essential for healthy neural communication and cognitive processes.
Mental Focus 78.0
By supporting the production of dopamine and norepinephrine, L-Phenylalanine can contribute to improved alertness, concentration, and sustained mental focus, aiding in tasks requiring cognitive effort.
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