$21.96 $0.18 per serving
Product analysis
Acetyl L-Carnitine 500 mg offers an economical way to take a single ingredient involved in the body's energy processes. Its effects on everyday energy and focus in healthy adults remain uncertain.
AI assessment of the formula, label and price. How scoring works
Nutrient Quality20
The ingredient is named, but its exact preparation is not fully disclosed. An advantage in absorption or delivery therefore cannot be established.
Ingredient Transparency63
The amount is clearly stated, making serving comparisons easier. More specific form details are omitted, limiting comparisons between preparations.
Value For Money100
The declared amount is economical for the serving price. That price advantage does not resolve the uncertainty around everyday energy or focus benefits.
Customer Satisfaction78
Customer feedback is broadly positive across hundreds of ratings. The review count offers a useful picture of satisfaction without proving health benefits.
Product Focus57
A single ingredient keeps the formula easy to understand. Its connections to energy and brain processes are clearer than evidence for better focus or productivity in healthy adults.
- Format
Tablet - Container
- 120 Tablet(s)
- Per serving
- $0.18
- Also available
Acetyl L-Carnitine 500 mg$15.10- Customer rating
- 4.7 · 639 ratings
Goals
Impact
Lower effect
Acetyl L-Carnitine · 500 mg
Impact
High effect
Acetyl L-Carnitine · 500 mg
Acetyl L-carnitine is linked to cellular energy metabolism and acetylcholine-related processes. The saved finding places this serving in cerebral energy supply, but these mechanisms do not establish acute concentration enhancement. The supplied clinical research concerned prolonged use in Alzheimer disease and did not show an overall primary-outcome benefit. It cannot establish a routine focus benefit in healthy adults.
How this product is rated for Mental Focus
Ingredient fit72
Acetyl L-carnitine is the sole ingredient considered for this goal. The 500 mg serving receives a partial saved amount contribution, not a proven acute focus dose.
Goal fit
Acetyl L-carnitine is the sole ingredient considered for this goal.
Dose adequacy
The 500 mg serving receives a partial saved amount contribution, not a proven acute focus dose.
Pathways40
The saved finding concentrates on cerebral energy supply.
Depth
The saved finding concentrates on cerebral energy supply.
Breadth
Cerebral energy supply is the only substantially represented route.
Evidence83
Acetyl L-carnitine leads the saved evidence finding, although the supplied clinical context does not establish healthy acute focus. The ingredient receives the saved studied-preparation finding without establishing acute healthy-adult benefit.
Evidence strength
Acetyl L-carnitine leads the saved evidence finding, although the supplied clinical context does not establish healthy acute focus.
Studied preparation
The ingredient receives the saved studied-preparation finding without establishing acute healthy-adult benefit.
Formulation logic100
Acetyl L-carnitine meets the saved amount threshold. No configured ingredient conflict was identified in the saved findings.
Partner coverage
The credited ingredients work alone or have their required partner in the saved findings.
Conflicts
No configured ingredient conflict was identified in the saved findings.
Effective doses
Acetyl L-carnitine meets the saved amount threshold.
Impact
High effect
Acetyl L-Carnitine · 500 mg
Acetyl L-carnitine has a role in fatty-acid transport, but that mechanism does not establish more everyday energy. Fatigue findings supplied here concern adults over 70 with clinical fatigue. The 500 mg serving cannot be assumed to reproduce those results in other adults.
How this product is rated for Energy
Ingredient fit72
Acetyl L-Carnitine is the product's single assessed ingredient; the energy connection is specific to its role. The assessed amounts provide partial coverage of the saved references, with some ingredients contributing less than others.
Goal fit
Acetyl L-Carnitine is the product's single assessed ingredient; the energy connection is specific to its role.
Dose adequacy
The assessed amounts provide partial coverage of the saved references, with some ingredients contributing less than others.
Pathways40
Mitochondrial energy production is the main covered mechanism, with partial coverage from the assessed ingredients.
Depth
Mitochondrial energy production is the main covered mechanism, with partial coverage from the assessed ingredients.
Breadth
Coverage is concentrated in mitochondrial energy production, rather than extending across several energy mechanisms.
Evidence95
Acetyl L-carnitine evidence is limited to selected clinical fatigue populations; the saved preparation finding does not remove that distinction.
Evidence strength
Acetyl L-Carnitine provides the strongest assessed evidence connection; the population and intended use still limit what benefits can be expected.
Studied preparation
The assessed preparations meet the saved study criteria, without establishing identical effects in every population or regimen.
Formulation logic100
No missing partner or configured conflict was identified. The assessed ingredients meet the saved minimum amount check.
Partner coverage
The assessed ingredients do not depend on a missing partner for their assigned contribution.
Conflicts
No configured ingredient conflict was found in the supplied facts.
Effective doses
All ingredients included in this amount check clear its minimum comparison threshold; that threshold does not itself prove a noticeable benefit.
Impact
High effect
Acetyl L-carnitine relates to brain energy metabolism, and the 500 mg serving receives partial amount allowance in the saved comparison. However, energy mechanisms and findings in disease populations do not establish improved cognition in healthy adults. The saved contribution therefore has a narrower scientific interpretation than a claim of routine brain-health benefit.
How this product is rated for Brain Health
Ingredient fit72
Amounts give a mixed or partial overall finding. The formula's focus also depends on its other ingredients and linked goals.
Goal fit
The relevant ingredient content is focused, although the product is linked to several goals.
Dose adequacy
The declared relevant amounts receive partial overall allowance; this reflects the saved comparison rather than a proven benefit threshold.
Pathways19
The saved findings concentrate on brain energy metabolism. That mechanism does not establish healthy-adult cognitive improvement.
Depth
The strongest saved finding concerns brain energy metabolism, with partial coverage.
Breadth
No pathway reaches the saved breadth threshold, despite a partial contribution.
Evidence76
Acetyl L-Carnitine is the strongest contributor to the saved evidence finding. Its scientific limitations still apply despite meeting the saved preparation criteria.
Evidence strength
Acetyl L-Carnitine leads the saved evidence finding. The supplied findings do not establish routine healthy-adult cognitive benefit.
Studied preparation
Qualifying ingredients meet the saved preparation criteria; this does not remove the population and preparation limitations in the supplied science.
Formulation logic100
The saved findings show no unmet partner or matched conflict. Amount thresholds describe the comparison and do not establish combination benefits.
Partner coverage
The relevant ingredients have no unmet required partner in the saved findings; this does not demonstrate added benefit from combining them.
Conflicts
No configured conflict was matched. The caffeine amount penalties were inapplicable; this is not a general safety finding.
Effective doses
All ingredients included in this rule meet its saved amount threshold; that threshold is not a proven effective dose.
Impact
Moderate effect
Acetyl L-Carnitine · 500 mgAcetyl L-Carnitine · 500 mg
Acetyl-L-carnitine at 500 mg has a connection to mitochondrial energy processes, but the supplied clinical fatigue evidence comes from a different setting. A routine productivity benefit in healthy working adults remains uncertain.
How this product is rated for Productivity Boost
Ingredient fit72
The ingredient selection is closely focused on the goal's reviewed ingredients. The assessed amounts provide partial alignment with the saved ingredient comparisons.
Goal fit
The ingredient selection is closely focused on the goal's reviewed ingredients.
Dose adequacy
The assessed amounts provide partial alignment with the saved ingredient comparisons.
Pathways14
The strongest saved mechanism is brain energy buffering, with limited coverage. No reviewed mechanism reaches the saved coverage threshold.
Depth
The strongest saved mechanism is brain energy buffering, with limited coverage.
Breadth
No reviewed mechanism reaches the saved coverage threshold.
Evidence67
Acetyl L-Carnitine provides the strongest saved ingredient finding; this does not imply improved work output. The qualifying ingredient preparations match the saved reviewed comparisons.
Evidence strength
Acetyl L-Carnitine provides the strongest saved ingredient finding; this does not imply improved work output.
Studied preparation
The qualifying ingredient preparations match the saved reviewed comparisons.
Formulation logic100
No missing required ingredient partner was identified. No configured conflict was identified in the saved findings. All ingredients assessed for amounts meet the saved minimum comparison level.
Partner coverage
No missing required ingredient partner was identified.
Conflicts
No configured conflict was identified in the saved findings.
Effective doses
All ingredients assessed for amounts meet the saved minimum comparison level.
Impact
Moderate effect
Acetyl L-carnitine at 500 mg is involved in mitochondrial energy handling through fatty-acid transport. Its relevance to aging remains indirect: the supplied findings on fatigue and cognition do not establish routine preservation of function in healthy adults.
How this product is rated for Longevity
Ingredient fit72
1 ingredients contribute to the saved healthy-aging assessment, with no other active ingredients reducing its focus. The contributing amounts meet only part of the saved dose benchmarks.
Goal fit
1 ingredients contribute to the saved healthy-aging assessment, with no other active ingredients reducing its focus.
Dose adequacy
The contributing amounts meet only part of the saved dose benchmarks.
Pathways11
The strongest recorded contribution concerns mitochondrial energy production. No functional area reaches the saved coverage threshold.
Depth
The strongest recorded contribution concerns mitochondrial energy production.
Breadth
No functional area reaches the saved coverage threshold.
Evidence63
Acetyl L-Carnitine provides the strongest qualifying evidence in the saved assessment; the relevant benefit remains limited to its reviewed outcome. The qualifying ingredients match the preparations used in the saved evidence review.
Evidence strength
Acetyl L-Carnitine provides the strongest qualifying evidence in the saved assessment; the relevant benefit remains limited to its reviewed outcome.
Studied preparation
The qualifying ingredients match the preparations used in the saved evidence review.
Formulation logic100
The contributing ingredients can work alone or have their required partner present. No ingredient conflicts were recorded in the saved assessment. All contributing ingredients reach the saved meaningful-dose threshold.
Partner coverage
The contributing ingredients can work alone or have their required partner present.
Conflicts
No ingredient conflicts were recorded in the saved assessment.
Effective doses
All contributing ingredients reach the saved meaningful-dose threshold.
Ingredients
| Ingredient | Amount per serving | Score |
|---|---|---|
Acetyl L-Carnitine HCl | 500 mg |
Acetyl L-Carnitine · 500 mg OverallScore95
Each serving provides 500 mg of acetyl L-carnitine HCl. The whole-product price works out to about $0.18 per 500 mg of acetyl L-carnitine, a relatively low cost for this ingredient.
How this ingredient is rated
Active Ingredient Quality & Bioavailability88
Acetyl L-carnitine is the only carnitine form identified in the available facts. The available facts identify the HCl form and record no purity or manufacturing claim.
ALCAR vs. Standard Carnitine Form
Acetyl L-carnitine is the only carnitine form identified in the available facts.
Advanced Sourcing and Salt Specificity
The available facts identify the HCl form and record no purity or manufacturing claim.
Dose, Safety & Label Transparency100
Each serving contains 500 mg of acetyl L-carnitine, with its amount individually disclosed.
Clinical Dosage Efficacy
A serving provides 500 mg of acetyl L-carnitine.
Label Transparency and Proprietary Blends
The 500 mg amount of acetyl L-carnitine per serving is individually disclosed.
Value100
The whole-product price works out to about $0.18 per 500 mg of acetyl L-carnitine, a relatively low cost for this ingredient.
Price per 500mg Acetyl L-Carnitine
The whole-product price works out to about $0.18 per 500 mg of acetyl L-carnitine, a relatively low cost for this ingredient.
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Sources
Published studies used for the product analysis and the top-ranked studies for each ingredient and goal.
- Acetyl-L-carnitine treatment in minimal hepatic encephalopathy.
- Long-term acetyl-L-carnitine treatment in Alzheimer's disease.
- Pharmaco-electroencephalographic and clinical effects of the cholinergic substance--acetyl-L-carnitine--in patients with organic brain syndrome.
- Acetyl-L-carnitine improves cognitive functions in severe hepatic encephalopathy: a randomized and controlled clinical trial.
- Acetyl-L-carnitine in the treatment of mildly demented elderly patients.
- A double-blind, parallel, multicenter comparison of L-acetylcarnitine with placebo on the attention deficit hyperactivity disorder in fragile X syndrome boys.
- Acetyl L-carnitine (ALC) treatment in elderly patients with fatigue.
- Oral acetyl-L-carnitine therapy reduces fatigue in overt hepatic encephalopathy: a randomized, double-blind, placebo-controlled study.
- The supplementation of acetyl-L-carnitine decreases fatigue and increases quality of life in patients with hepatitis C treated with pegylated interferon-α 2b plus ribavirin.
- Acetyl-L-carnitine reduces depression and improves quality of life in patients with minimal hepatic encephalopathy.
- A prospective study to evaluate the efficacy and safety of oral acetyl-L-carnitine for the treatment of chemotherapy-induced peripheral neuropathy.
- Metabolomic biomarkers for (R, S)-ketamine and (S)-ketamine in treatment-resistant depression and healthy controls: A systematic review.
- Acetyl-L-carnitine Slows the Progression from Prefrailty to Frailty in Older Subjects: A Randomized Interventional Clinical Trial.
- Acetyl-L-Carnitine Supplementation During HCV Therapy With Pegylated Interferon-α 2b Plus Ribavirin: Effect on Work Performance; A Randomized Clinical Trial.
- [Psycho-functional changes in attention and learning under the action of L-acetylcarnitine in 17 young subjects. A pilot study of its use in mental deterioration].
- Acetyl-L-carnitine (ALC) in attention-deficit/hyperactivity disorder: a multi-site, placebo-controlled pilot trial.
- Acetyl-L-carnitine for patients with hepatic encephalopathy.
- Low Bioavailability and High TMAO Production: Novel Insights Into Acetylcarnitine and Carnitine Metabolism.