$36.79 $0.15 per serving
Product analysis
Acetyl L-Carnitine 500 mg offers an economical, single-ingredient formula linked to cellular energy processes. Routine fatigue or focus benefits in healthy adults remain uncertain because the relevant findings concern different populations.
AI assessment of the formula, label and price. How scoring works
Nutrient Quality40
Acetyl L-carnitine is clearly identified as the hydrochloride form. That label detail does not establish the quality or effectiveness of the preparation.
Ingredient Transparency100
The amount and hydrochloride form are disclosed, making the main ingredient easy to identify. The declared compound amount does not establish a separate conversion to active content.
Value For Money100
The cost compares favorably for the declared amount of acetyl L-carnitine. That supports its affordability for someone specifically seeking this ingredient.
Customer Satisfaction82
Customer ratings are strongly positive across more than a thousand reviews. The feedback provides a useful satisfaction picture without establishing fatigue or cognitive benefits.
Product Focus57
The formula stays centered on acetyl L-carnitine despite covering several health aims. Evidence from selected clinical populations does not establish routine energy, memory or productivity benefits in healthy adults.
- Format
Capsule - Container
- 240 Capsule(s)
- Per serving
- $0.15
- Also available
Acetyl L-Carnitine 500 mg$16.09- Customer rating
- 4.7 · 1,299 ratings
Goals
Impact
High effect
Acetyl L-Carnitine · 500 mg
Acetyl L-carnitine relates to cellular energy metabolism and acetylcholine production. The supplied cognitive evidence comes from disease cohorts and does not establish improved focus or memory in healthy adults. The 500 mg per serving receives partial amount recognition in the saved findings, without establishing an effective routine cognitive dose.
How this product is rated for Cognitive Support
Ingredient fit72
Acetyl L-carnitine is the sole assessed ingredient, with partial amount recognition.
Goal fit
The assessed ingredients are directed toward cognitive support.
Dose adequacy
Declared amounts receive partial or varied recognition in the saved exposure comparison; this does not establish a proven cognitive dose.
Pathways40
Cellular energy metabolism is the only substantially represented area.
Depth
Cellular energy metabolism is the only substantially represented area.
Breadth
One cognitive area reaches substantial coverage, leaving the other areas unrepresented or less developed.
Evidence79
Disease-cohort findings limit expectations for routine cognition.
Evidence strength
Disease-cohort findings limit expectations for routine cognition.
Studied preparation
Acetyl L-carnitine matches the saved preparation comparison.
Formulation logic100
The assessed ingredients need no missing partner and meet the saved minimum amount comparison. No configured conflict was identified.
Partner coverage
The assessed ingredients work alone or have their required partner; no missing partner was identified.
Conflicts
No configured ingredient conflict was identified.
Effective doses
The assessed ingredients meet the saved minimum amount comparison, without establishing a proven cognitive benefit.
Impact
High effect
Acetyl L-Carnitine · 500 mg
Acetyl L-carnitine is connected to fatty-acid transport, but this mechanism does not establish a routine energy benefit. The saved result recognizes the 500 mg serving, while the supplied scientific context limits expectations: the relevant fatigue trial involved adults over 70 with clinical fatigue. Those findings do not establish the same benefit in generally healthy adults.
How this product is rated for Energy
Ingredient fit72
Acetyl L-Carnitine anchors the recognized ingredient fit, with declared amounts partly meeting the saved comparisons.
Goal fit
Acetyl L-Carnitine is central to the product’s recognized energy connection, although the product is also linked to other goals.
Dose adequacy
The declared amounts partly meet the saved comparisons, limiting the size of the recognized contribution.
Pathways40
The saved coverage is concentrated in mitochondrial energy production.
Depth
The strongest saved coverage concerns mitochondrial energy production; this does not independently prove a noticeable energy benefit.
Breadth
Coverage reaches the saved threshold for mitochondrial energy production, with no comparable breadth across other energy pathways.
Evidence95
Acetyl L-Carnitine leads the recognized evidence, but the supplied context limits how broadly its findings apply.
Evidence strength
Acetyl L-Carnitine supplies the strongest recognized evidence here, subject to the population and application limits described for it.
Studied preparation
The saved findings accept the qualifying preparations; this does not establish form superiority.
Formulation logic100
No required partner is missing, and no configured sedative conflict is present. The recognized amounts reach the saved minimum comparison.
Partner coverage
The recognized ingredients have no missing required partner for their assigned contributions.
Conflicts
No configured sedative conflict applies: valerian, kava, qualifying tryptophan and melatonin are absent.
Effective doses
All recognized ingredients reach the saved minimum amount comparison; that threshold is not proof of a clinical energy effect.
Impact
Lower effect
Acetyl L-Carnitine · 500 mg
Impact
Moderate effect
Acetyl L-Carnitine · 500 mgAcetyl L-Carnitine · 500 mg
Acetyl L-carnitine has a proposed connection to cellular energy, but the supplied evidence comes from a clinical setting that does not transfer to ordinary work in healthy adults. A routine improvement in focus, fatigue or productivity remains uncertain at this serving amount.
How this product is rated for Productivity Boost
Ingredient fit72
Acetyl L-Carnitine is the sole relevant ingredient in the saved findings, although the product is linked to several goals.
Goal fit
Acetyl L-Carnitine is the sole relevant ingredient in the saved findings, although the product is linked to several goals.
Dose adequacy
Acetyl L-Carnitine's amount receives partial recognition against the saved amount benchmark; that benchmark is not a proven productivity dose.
Pathways14
Acetyl L-carnitine supplies the saved brain-energy connection, although the clinical evidence does not transfer to routine productivity. None of the assessed processes reaches the saved threshold for substantial coverage.
Depth
Acetyl L-carnitine supplies the saved brain-energy connection, although the clinical evidence does not transfer to routine productivity.
Breadth
None of the assessed processes reaches the saved threshold for substantial coverage.
Evidence67
Acetyl L-carnitine leads the saved evidence comparison, but its clinical evidence is not transferable to healthy adults doing ordinary work.
Evidence strength
Acetyl L-carnitine leads the saved evidence comparison, but its clinical evidence is not transferable to healthy adults doing ordinary work.
Studied preparation
The included ingredient preparations are accepted in the saved findings; that recognition does not establish better work performance or superiority of a nutrient form.
Formulation logic100
The included ingredients have no required partner missing, and no assessed conflict was found.
Partner coverage
Each included ingredient can contribute without a missing required partner.
Conflicts
No assessed ingredient conflict was found in the supplied facts.
Effective doses
All of the included ingredient's amount reach the saved minimum for inclusion, which is not a universal effective productivity dose.
Impact
High effect
Acetyl-L-carnitine is linked to energy metabolism, but that mechanism does not establish better cognition in healthy adults. The supplied clinical findings largely concern disease populations, and a large Alzheimer trial missed its primary outcomes. The 500 mg per serving therefore cannot be described as a proven cognitive-enhancement dose.
How this product is rated for Brain Health
Ingredient fit72
The relevant ingredients and their declared amounts support the specific roles described here, with the amount findings detailed below.
Goal fit
The relevant ingredients make this a focused formula for the brain-related roles described here.
Dose adequacy
The declared amounts provide only partial support against the saved amount comparisons, limiting expectations for the relevant roles.
Pathways19
The supplied findings link the ingredients to the processes described below; those links are distinct from demonstrated cognitive outcomes.
Depth
The strongest assigned connection is cerebral energy metabolism; this mechanistic connection does not itself establish improved cognition.
Breadth
None of the listed pathways reaches the saved coverage threshold.
Evidence76
The supplied evidence varies by ingredient, preparation and population. The findings below retain those distinctions.
Evidence strength
Acetyl L-Carnitine leads the saved evidence comparison, with benefits limited to the population and role described in the supplied context.
Studied preparation
The saved comparison recognizes the declared preparations; this does not establish that the product matches every study population or use pattern.
Formulation logic100
The supplied findings identify no unmet partner requirements or assigned conflicts, and the credited ingredients meet the minimum amount threshold.
Partner coverage
The credited ingredients have no unmet partner requirement in the supplied findings; this does not establish an added combination benefit.
Conflicts
No conflict was identified by the supplied checks; this is not a broader safety assessment.
Effective doses
All credited ingredients meet the saved minimum amount threshold, which is a comparison cutoff rather than a proven effective cognitive dose.
Impact
High effect
Acetyl L-Carnitine · 500 mg
Acetyl L-carnitine has roles in energy metabolism and acetylcholine biology. Its saved energy-related recognition does not establish acute focus enhancement in healthy adults. The supplied clinical evidence concerns a different population and longer treatment. The HCl declaration remains a compound amount rather than a separately established active-content conversion.
How this product is rated for Mental Focus
Ingredient fit72
The saved findings recognize the main declared ingredients, subject to their amount and preparation limitations.
Goal fit
The saved fit centers on the recognized ingredients, with its broader goal links also affecting the finding.
Dose adequacy
The disclosed amounts receive partial recognition against the saved benchmarks, without establishing a proven focus dose.
Pathways40
The saved pathway coverage is concentrated in the strongest mechanism rather than broad across focus functions.
Depth
The strongest saved pathway is cerebral energy supply; this describes the saved mechanism finding, not demonstrated enhancement.
Breadth
Only one focus pathway reached the saved coverage benchmark, limiting breadth.
Evidence83
Saved evidence recognition must be read alongside the specific preparation and population limitations.
Evidence strength
Acetyl L-carnitine or choline leads the saved recognition, but the supplied context does not establish routine acute focus enhancement.
Studied preparation
The saved findings treat the recognized preparations as studied; population, timing and task limitations still apply.
Formulation logic100
Recognized ingredients meet the recorded partner requirements, with no configured conflict matched.
Partner coverage
No required partner is missing among the ingredients recognized in the saved finding.
Conflicts
No configured conflict was matched in the supplied findings; this is not a general safety assessment.
Effective doses
All ingredients counted in this finding meet its minimum amount threshold; that threshold is not proof of efficacy.
Ingredients
| Ingredient | Amount per serving | Score |
|---|---|---|
Acetyl L-Carnitine (Acetyl L-Carnitine HCl) | 500 mg |
Acetyl L-Carnitine (Acetyl L-Carnitine HCl) · 500 mg OverallScore95
Each serving provides 500 mg of acetyl L-carnitine HCl, with the amount clearly stated. The whole-product cost works out to about $0.15 per 500 mg of acetyl L-carnitine.
How this ingredient is rated
Active Ingredient Quality & Bioavailability88
The identified carnitine form is acetyl L-carnitine HCl. No manufacturing or purity-testing claim is recorded in the available facts.
ALCAR vs. Standard Carnitine Form
Acetyl L-carnitine is the only carnitine form identified in the saved facts.
Advanced Sourcing and Salt Specificity
The saved facts identify the HCl form. No manufacturing or purity-testing claim is recorded in the available facts.
Dose, Safety & Label Transparency100
The stated amount is 500 mg per serving.
Clinical Dosage Efficacy
500 mg of acetyl L-carnitine is provided per serving.
Label Transparency and Proprietary Blends
The amount of acetyl L-carnitine is stated as 500 mg per serving.
Value100
The whole-product cost is about $0.15 per 500 mg of acetyl L-carnitine.
Price per 500mg Acetyl L-Carnitine
The whole-product cost is about $0.15 per 500 mg of acetyl L-carnitine.
Alternative products
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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.