$16.09 $0.16 per serving
Product analysis
Acetyl L-Carnitine 500 mg provides a single ingredient involved in cellular energy processes, with limited evidence for fatigue-related benefits in selected older adults.
AI assessment of the formula, label and price. How scoring works
Nutrient Quality20
The exact ingredient form is not disclosed. Its quality cannot be confidently distinguished from other acetyl L-carnitine products.
Ingredient Transparency63
The amount per serving is stated. The missing form detail leaves less information for comparing ingredient quality.
Value For Money100
The serving offers very good value for its acetyl L-carnitine amount. A low cost does not establish better results for energy or concentration.
Customer Satisfaction82
Customer feedback is very positive across more than a thousand ratings. The review volume gives a useful picture of satisfaction, without establishing effectiveness.
Product Focus57
One ingredient is linked to several energy and brain-related uses. The evidence comes mainly from selected older or clinical populations, so everyday focus and productivity benefits remain uncertain.
- Format
Capsule - Container
- 100 Capsule(s)
- Per serving
- $0.16
- Also available
Acetyl L-Carnitine 500 mg$36.79- Customer rating
- 4.7 · 1,308 ratings
Goals
Impact
High effect
Acetyl L-Carnitine · 500 mg
Acetyl L-carnitine has a connection to cellular energy metabolism, but the supplied fatigue evidence concerns adults over 70 with clinical fatigue. The 500 mg serving receives a contribution in the saved findings, yet it does not establish routine adult energy improvement. Results for other carnitine forms cannot be transferred to this ingredient.
How this product is rated for Energy
Ingredient fit72
Acetyl L-Carnitine anchors this product’s saved energy connection. The serving only partly reaches the saved amount comparisons; this does not measure how much energy it provides.
Goal fit
Acetyl L-Carnitine is the focused ingredient in the saved energy findings.
Dose adequacy
The serving only partly reaches the saved amount comparisons; this does not measure how much energy it provides.
Pathways40
The saved findings concentrate on mitochondrial energy production, without establishing the size of a clinical benefit. That is a narrow connection rather than broad energy coverage.
Depth
The saved findings concentrate on mitochondrial energy production, without establishing the size of a clinical benefit.
Breadth
Coverage is concentrated in mitochondrial energy production, rather than extending across several distinct energy functions.
Evidence95
Acetyl L-Carnitine appears in the saved findings, but the supplied population or preparation limits prevent a routine adult energy claim.
Evidence strength
Acetyl L-Carnitine appears in the saved findings, but the supplied population or preparation limits prevent a routine adult energy claim.
Studied preparation
The preparation qualifies in the saved findings, although population and treatment limits still govern how its effects can be described.
Formulation logic100
No missing partner or specified conflict was identified. The included amounts meet the saved minimum comparisons, without establishing a routine energy benefit.
Partner coverage
The included ingredients do not require a missing partner for the roles described.
Conflicts
No specified ingredient conflict was identified in the supplied findings.
Effective doses
The included ingredients meet the saved minimum amount comparisons; these are not proven fatigue-treatment thresholds.
Impact
Lower effect
Acetyl L-Carnitine · 500 mg
Impact
High effect
Acetyl L-carnitine is linked to brain energy processes, but that mechanism and findings in disease populations do not establish improved cognition in healthy adults. The 500 mg serving receives a partial amount contribution in the saved comparison. The supplied evidence does not support dependable memory or attention benefits for general use.
How this product is rated for Brain Health
Ingredient fit72
The serving amounts provide partial contributions; unknown individual quantities cannot establish an amount-based contribution.
Goal fit
The relevant ingredients are concentrated on this goal, although the product may also be linked to other uses.
Dose adequacy
The serving amounts provide partial contributions; unknown individual quantities cannot establish an amount-based contribution.
Pathways19
The strongest saved finding concerns cerebral energy metabolism; that connection does not by itself establish a noticeable cognitive benefit.
Depth
The strongest saved finding concerns cerebral energy metabolism; that connection does not by itself establish a noticeable cognitive benefit.
Breadth
No listed function reaches the saved comparison's coverage threshold at these serving amounts.
Evidence76
The saved comparison recognizes the included forms, without establishing that the entire product or its serving schedule was tested.
Evidence strength
Acetyl L-Carnitine provides the strongest saved evidence contribution among the included ingredients; its specific population and benefit limitations still apply.
Studied preparation
The saved comparison recognizes the included forms, without establishing that the entire product or its serving schedule was tested.
Formulation logic100
The supplied comparison finds no missing required partners or matched conflicts. Amount limitations are reflected separately.
Partner coverage
The included contributions have no missing required partner in the supplied comparison; this does not establish added benefit from combining them.
Conflicts
No configured conflict was matched in the supplied facts.
Effective doses
All counted ingredients clear the saved minimum amount threshold; that threshold is not a proven effective dose for an individual.
Impact
Moderate effect
Acetyl L-Carnitine · 500 mgAcetyl L-Carnitine · 500 mg
Acetyl L-carnitine at 500 mg relates to brain energy processes. The supplied assessment offers a limited connection to productivity, rather than evidence of a reliable improvement in everyday work.
How this product is rated for Productivity Boost
Ingredient fit72
The saved assessment finds a reasonably focused contribution to the goal, while accounting for other ingredients and uses. The assessed amounts provide partial support against the saved dose references (50 out of 100).
Goal fit
The saved assessment finds a reasonably focused contribution to the goal, while accounting for other ingredients and uses.
Dose adequacy
The assessed amounts provide partial support against the saved dose references (50 out of 100).
Pathways14
The strongest saved coverage concerns brain energy buffering, with partial coverage. No mechanism reaches the saved threshold for broad coverage.
Depth
The strongest saved coverage concerns brain energy buffering, with partial coverage.
Breadth
No mechanism reaches the saved threshold for broad coverage.
Evidence67
Acetyl L-Carnitine leads the saved evidence comparison at an assessed amount; this is not a prediction of improved work output. The saved assessment identifies the qualifying ingredients as matching its studied-preparation category.
Evidence strength
Acetyl L-Carnitine leads the saved evidence comparison at an assessed amount; this is not a prediction of improved work output.
Studied preparation
The saved assessment identifies the qualifying ingredients as matching its studied-preparation category.
Formulation logic100
The assessed ingredients work independently or have their listed partner. No ingredient conflict is recorded in the saved assessment.
Partner coverage
The assessed ingredients work independently or have their listed partner.
Conflicts
No ingredient conflict is recorded in the saved assessment.
Effective doses
All assessed ingredients reach the saved minimum dose threshold.
Impact
High effect
Acetyl L-Carnitine · 500 mg
Acetyl L-carnitine has a role in energy metabolism and acetyl donation, but these mechanisms do not establish improved everyday cognition. The supplied clinical evidence comes from a disease population and cannot be transferred to healthy adults. Its 500 mg per serving receives partial amount recognition in the saved findings, without establishing a proven cognitive dose.
How this product is rated for Cognitive Support
Ingredient fit72
Acetyl L-carnitine supplies the relevant connection to cognition. The amount findings are mixed, with some ingredients receiving only partial recognition.
Goal fit
Acetyl L-carnitine provides the relevant ingredient focus, although the product is associated with several goals.
Dose adequacy
The 500 mg serving receives partial amount recognition, without establishing an effective dose for healthy-adult cognition.
Pathways40
The recorded connection concerns cerebral energy buffering; metabolic mechanisms do not establish an everyday cognitive benefit. Coverage is concentrated in this one area.
Depth
The recorded connection concerns cerebral energy buffering; metabolic mechanisms do not establish an everyday cognitive benefit.
Breadth
Only cerebral energy buffering reaches the saved coverage threshold, leaving the other named pathways uncovered.
Evidence79
Acetyl L-carnitine evidence from a disease cohort cannot establish routine cognitive enhancement in healthy adults.
Evidence strength
Acetyl L-carnitine evidence from a disease cohort cannot establish routine cognitive enhancement in healthy adults.
Studied preparation
The saved preparation finding recognizes the counted ingredients; form naming does not establish superior cognitive effects.
Formulation logic100
No configured conflict was identified in the supplied findings. The counted ingredients have no unmet partner requirement.
Partner coverage
The counted ingredients have no unmet partner requirement in the supplied findings; that does not establish an added benefit from combining them.
Conflicts
No configured conflict was identified in the supplied findings.
Effective doses
All counted ingredients meet the saved minimum amount threshold; this threshold is not a demonstrated effective dose.
Impact
High effect
Acetyl L-Carnitine · 500 mg
Acetyl L-carnitine contributes to processes involved in cellular energy and acetylcholine, but those roles do not establish better attention after a serving. The supplied clinical context concerns disease populations and longer use, rather than routine focus in healthy adults. Its declared amount receives credit in the saved calculation, while the supplied scientific context remains insufficient for an acute focus claim.
How this product is rated for Mental Focus
Ingredient fit72
The serving has focus-related ingredients, with amount suitability and broader-purpose ingredients assessed separately.
Goal fit
The ingredients are concentrated on the assessed focus-related role, though the product is also linked to other goals.
Dose adequacy
The declared serving receives partial amount credit; matching an amount reference does not establish an effective dose for acute focus.
Pathways40
The saved mechanism finding is concentrated in the roles described below. Mechanism coverage does not establish clinical improvement.
Depth
The strongest mapped role is cerebral energy supply; this describes the saved mechanism finding rather than a demonstrated clinical effect.
Breadth
Only one assessed route reaches the saved coverage threshold, so the mapped contribution remains narrow.
Evidence83
The strongest saved evidence finding and preparation matches are described separately. Scientific limitations still determine which focus benefits can be claimed.
Evidence strength
Acetyl L-carnitine leads the saved finding, while the supplied scientific context does not establish routine acute focus enhancement.
Studied preparation
The saved preparation check is satisfied for qualifying ingredients; this does not make every ingredient clinically effective for immediate focus.
Formulation logic100
Partner requirements, recorded conflicts and minimum amounts shape the saved formulation finding.
Partner coverage
The saved partner check finds no missing required partner among the credited ingredients.
Conflicts
No configured conflict was recorded in the supplied facts; this is not a general safety assessment.
Effective doses
All credited ingredients meet the saved minimum amount threshold; that threshold does not prove a clinically effective focus dose.
Ingredients
| Ingredient | Amount per serving | Score |
|---|---|---|
Acetyl L-Carnitine HCl | 500 mg |
Acetyl L-Carnitine · 500 mg OverallScore95
A serving provides 500 mg of acetyl L-carnitine, with the hydrochloride form and individual amount identified. The whole-product price works out to about $0.16 per 500 mg of ALCAR, giving a clear basis for comparing cost.
How this ingredient is rated
Active Ingredient Quality & Bioavailability88
The hydrochloride form is identified. The supplied evidence does not establish a manufacturing or purity claim.
ALCAR vs. Standard Carnitine Form
Acetyl L-carnitine is identified, with no other carnitine forms recorded alongside it.
Advanced Sourcing and Salt Specificity
The hydrochloride form is identified, but no manufacturing or purity claim is recorded in the supplied evidence.
Dose, Safety & Label Transparency100
The 500 mg ALCAR amount is disclosed individually, so it can be compared without guessing its share of a blend.
Clinical Dosage Efficacy
A serving provides 500 mg of acetyl L-carnitine.
Label Transparency and Proprietary Blends
The individual ALCAR amount is explicitly stated, rather than hidden within a combined blend weight.
Value100
About $0.16 per 500 mg of ALCAR is a low ingredient-normalized cost in the saved evaluation. The calculation uses the complete product price.
Price per 500mg Acetyl L-Carnitine
The whole-product price works out to about $0.16 per 500 mg of declared ALCAR; this is not a price for isolated ALCAR.
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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.