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Acetyl-L-Carnitine 500 mg

Thorne
4.8
★ ★ ★ ★ ★
(2414 ratings)
Acetyl L-Carnitine 500 mg
Product Image
Score91

A professional-grade 500 mg ALCAR supplement from Thorne for superior purity and brain health support.

How scoring works
Quantity:60 Capsule(s) • (60 servings)
Goals:
Energy
Brain Health
Cognitive Support
Anti-Aging
Mental Focus
Productivity Boost
Metabolism Boost
Weight Loss

Score 91

A professional-grade 500 mg ALCAR supplement from Thorne for superior purity and brain health support.

How scoring works
$30.30($0.50 per serving)
Vitacost
$ 32.00
Amazon
$ 32.00
Pure Formulas
$ 32.00
iHerb
$ 32.00
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Analysis

This product delivers 500 mg of Acetyl-L-Carnitine per capsule in a 60-count bottle. Thorne uses high-standard forms to ensure the carnitine is bioavailable for brain health and metabolic transport. This form is specifically researched for its ability to support mental focus and neuroprotection.

It fits users who want a professional, well-tested supplement from a highly reputable source. While the price is higher, the focus on purity and quality control is significant. It is a clean, reliable baseline for supporting both cognitive energy and cellular metabolism.

Pros

  • Professional brand quality
  • High purity and ingredient stability
  • Supports brain health and energy
  • Clean, no-filler formula

Cons

  • Highest price per serving for carnitine
  • Small 60-count bottle

Warnings

  • Take on an empty stomach for maximum uptake
  • Keep the bottle tightly closed

Nutrient quality

93 Highest impact

Utilizing the chloride salt form ensures high stability and consistent biological availability of the active molecule. A 500mg dose provides a clinically relevant amount for supporting cognitive function and cellular metabolism.

Ingredient transparency

99 Highest impact

Labeling is highly transparent, stating the exact amount and form of the active ingredient clearly on the supplement facts panel. Usage directions and inactive ingredient lists are straightforward, providing a high level of clarity.

Customer satisfaction

96 Highest impact

Strong user ratings and a robust review count indicate high satisfaction with the product's performance and quality. Feedback consistently reflects positive outcomes for mental clarity and metabolic energy goals.

Value for money

74 High impact

Pricing is significantly higher than entry-level brands but reflects the premium quality and testing standards of the manufacturer. It offers value for consumers who prioritize professional-grade certifications.

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Goals

Energy
Impact
Highest effect
A Goal FitA+ Strength of SupportB+ CoverageA+ Formula Quality

Acetyl-L-Carnitine facilitates the efficient transport of fatty acids into the mitochondria for ATP production. This specific form provides both physical metabolic support and cognitive benefits by crossing the blood-brain barrier.

The clinical 500mg dose is well aligned with goals for sustained physical energy and mental focus. This high-purity single-ingredient capsule appears exceptionally well aligned for individuals seeking to optimize their cellular fuel utilization.

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Brain Health
Impact
Highest effect
A Goal FitA+ Strength of SupportB- CoverageA+ Formula Quality

Acetyl-L-Carnitine provides targeted support for mitochondrial energy production and crosses the blood-brain barrier for cognitive benefit.

This single-ingredient supplement appears well aligned with goals for enhancing mental focus and supporting neuroprotective energy pathways.

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Cognitive Support
Impact
Highest effect
A Goal FitA Strength of SupportB- CoverageA+ Formula Quality

This high-purity Acetyl-L-Carnitine (ALCAR) supplement supports neurological function by providing mental energy and neuroprotection. The acetylated form is particularly effective for reaching the brain, where it contributes to mitochondrial health and neurotransmitter support.

The 500mg dose is a standard clinical amount for daily cognitive maintenance. It is a professional-grade option for individuals seeking a focused, single-ingredient metabolic booster for cognitive health.

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Anti-Aging
Impact
Highest effect
A Goal FitA+ Strength of SupportC CoverageA+ Formula Quality

Acetyl-L-carnitine provides focused support for mitochondrial efficiency and age-related cognitive health. This acetylated form is specifically required to cross the blood-brain barrier for metabolic and neurological benefits.

Meaningful dosages of 500mg align with clinical standards for promoting cellular energy production. A professional-grade selection from a high-quality brand ensures purity and bioactivity for longevity goals.

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Mental Focus
Impact
Highest effect
A- Goal FitA+ Strength of SupportC CoverageA+ Formula Quality

Acetyl-L-Carnitine is provided at a 500mg dose to support brain energy metabolism and cholinergic neurotransmission. This specific form of carnitine crosses the blood-brain barrier effectively to aid in mental focus and clarity.

The supplement focuses on a single, high-purity pathway for cognitive support. Its simple and high-quality design appears well aligned for users seeking to improve focus through enhanced brain energy.

View goal →
Productivity Boost
Impact
Highest effect
A Goal FitA Strength of SupportC+ CoverageA+ Formula Quality

This high-purity acetyl-l-carnitine supplement targets cellular energy production and brain health. By facilitating the transport of fatty acids into the mitochondria, it may contribute to sustained mental energy and improved focus.

The formulation appears well aligned with the goal of boosting cognitive performance. Thorne's commitment to purity ensures that the active compound is provided in a reliable and bioavailable form.

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Ingredients

IngredientAmount per serving
Acetyl-L-Carnitine (Acetyl-L-Carnitine Chloride)
 500 mg
Gluten Free Adults 18–50
Report overview
Acetyl L-Carnitine (Acetyl-L-Carnitine Chloride) · 500 mg OverallScore88
A Active Ingredient Quality & BioavailabilityA+ Dose, Safety & Label TransparencyD+ Value
Thorne provides a highly stable and well-tested form of acetyl l-carnitine in a clinical 500mg dose. Known for superior quality control and NSF certification, this is a top-tier choice for professional-grade supplementation.
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Acetyl L-Carnitine & Alpha-Lipoic Acid

Source Naturals
4.6
★★★★★
(3389 ratings)
Adding alpha-lipoic acid creates a synergistic duo that supports mitochondrial energy and provides critical antioxidant protection. This dual-action tablet offers significantly more metabolic value in a single, well-priced supplement.
Other sellers (3)
94 Value

Acetyl-L-Carnitine 500 mg

California Gold Nutrition
4.7
★★★★★
(3453 ratings)
Offering high standards for ingredient purity and bioavailability, this capsule formula supports cognitive clarity and energy effectively. It represents a sensible balance of quality manufacturing and affordability for consistent brain health.
Other sellers (0)
95 Value

Acetyl L-Carnitine 500 mg

Source Naturals
4.7
★★★★★
(632 ratings)
Delivering a consistent 500mg dose of carnitine HCl in a high-count format ensures you have a long-term supply for energy and focus. This choice balances quality manufacturing with a much more accessible price point for metabolic support.
Other sellers (3)
95 Performance

Optimized Carnitine

Life Extension
4.8
★★★★★
(1255 ratings)
Incorporating three specialized forms of carnitine provides more broad-spectrum support for cellular and cardiovascular health. This formula delivers a much higher total carnitine dose per serving than single-ingredient chloride versions.
Other sellers (3)
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Natural Factors
4.8
★★★★★
(465 ratings)
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Other sellers (1)
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Acetyl-L-Carnitine Arginate

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Other sellers (5)
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