Acetyl L-Carnitine
Description
Acetyl L-Carnitine (ALCAR) is an amino acid derivative synthesized in the body from lysine and methionine, and is structurally similar to L-carnitine. Its acetyl group allows it to cross the blood-brain barrier more effectively than L-carnitine, making it particularly beneficial for brain health. ALCAR plays a vital role in mitochondrial function, specifically by transporting fatty acids into the mitochondria where they are oxidized for energy production. Beyond its role in energy metabolism, ALCAR is recognized for its neuroprotective and cognitive-enhancing properties. It contributes to the synthesis of acetylcholine, an important neurotransmitter involved in memory and learning. Additionally, ALCAR acts as an antioxidant, helping to protect cells from oxidative damage caused by free radicals, particularly within the brain. Supplementation with ALCAR is often pursued for its potential to support cognitive function, improve mood, and enhance physical performance. It is studied for its benefits in various conditions involving nerve pain, fatigue, and age-related cognitive decline, positioning it as a versatile compound for overall health and well-being.
Sources
Red meat (especially beef)Fish (e.g., cod, salmon)PoultryDairy productsAvocadosTempeh
Cheapest Acetyl L-Carnitine Supplements
Best Acetyl L-Carnitine Supplements
Value Acetyl L-Carnitine supplements
Optimal Dosage
Minimum500 mg
Maximum1500 mg
Safety & Toxicity
Toxicity Threshold4000 mg
Toxicity EffectRestlessness, gastrointestinal discomfort
Goals
Cognitive Support
Impact
High effect
Typical dose:500–1500 mg
This form of L-Carnitine can cross the blood-brain barrier, where it helps transport fatty acids into mitochondria to be burned for energy. This process supports mental energy, reduces mental fatigue, and may improve focus and processing speed, particularly in aging individuals.
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Energy
Impact
High effect
Typical dose:500–2000 mg
By facilitating fat metabolism, Acetyl L-Carnitine (ALCAR) enhances energy production. Its acetyl group contributes to the production of acetylcholine, a key neurotransmitter for cognitive function, making it effective for reducing mental fatigue and brain fog.
View goal →
Mental Focus
Impact
High effect
Typical dose:500–2000 mg
This acetylated form of L-Carnitine can cross the blood-brain barrier, where it helps transport fatty acids into mitochondria for energy production. This enhances mental energy and has been shown to combat age-related cognitive decline and mental fatigue.
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Metabolism Boost
Impact
High effect
Typical dose:500–2000 mg
Acetyl L-Carnitine (ALCAR) is a highly bioavailable form of carnitine. It acts as a shuttle, moving long-chain fatty acids across the mitochondrial membrane where they can be oxidized ('burned') for ATP production. This is particularly beneficial during periods of calorie restriction or exercise.
View goal →
Productivity Boost
Impact
High effect
Acetyl L-Carnitine (ALCAR) crosses the blood-brain barrier to assist in mitochondrial energy production and provides acetyl groups for synthesizing acetylcholine, a neurotransmitter critical for focus, memory, and cognitive speed. It's particularly effective at reducing mental fatigue.
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Interactions
Positive Interactions
Alpha-GPC
Both ALCAR and Alpha-GPC contribute to acetylcholine synthesis, a neurotransmitter crucial for memory and learning, potentially enhancing cognitive benefits synergistically.
Coenzyme Q-10
Both ALCAR and Coenzyme Q-10 are vital for mitochondrial function and cellular energy production, offering synergistic support for energy metabolism and antioxidant defense.
Choline
As a precursor to acetylcholine, Choline can work synergistically with ALCAR to support neurotransmitter synthesis and cognitive function.
Creatine
Both ALCAR and Creatine are involved in energy metabolism, particularly within muscle cells, potentially enhancing exercise performance and recovery when used together.
Recommended products
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Acetyl L-Carnitine 500 mg
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Acetyl-L-Carnitine 500 mg
The Vitamin Shoppe
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Acetyl L-Carnitine 250 mg
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California Gold Nutrition
Acetyl L-Carnitine: 500 mg
A direct Acetyl L-Carnitine supplement, providing a common dosage intended to support cellular energy, metabolism, and brain function.
Product stats
Price per product
Average$43.19
Median$35.99
Price per serving
Average$1.15
Median$1.03
Price distribution
Price per serving distribution
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