What is Acetyl-L-Carnitine?

Acetyl-L-Carnitine (ALCAR) is an amino acid derivative that occurs naturally in the body. It plays a crucial role in energy production and supports cognitive function, memory, and overall brain health. ALCAR is considered a nootropic due to its cognitive-enhancing properties and is often used to improve mental clarity, focus, and learning capacity.

Where does Acetyl-L-Carnitine come from?

ALCAR is synthesized from L-carnitine, an amino acid derivative found in red meat, dairy products, and some plant-based foods like avocados and soybeans. The body can produce L-carnitine and convert it to ALCAR; however, dietary supplementation is often recommended to ensure adequate levels.

What are the effects of Acetyl-L-Carnitine?


  • Enhances cognitive function, focus, and mental clarity
  • Improves learning capacity and memory
  • Supports overall brain health


  • Boosts energy production in cells
  • Reduces fatigue and promotes physical endurance
  • Supports cellular and mitochondrial health

How to use Acetyl-L-Carnitine?

Acetyl-L-Carnitine is available in capsule, tablet, and powder forms. It is typically taken orally, and the recommended dosage may vary depending on the individual's needs and goals. Always follow the manufacturer's instructions on the label.

How much Acetyl-L-Carnitine to use?

When trying out new supplements it is wise to start with a lower dose and–depending on the experienced effects–increase or decrease the dosage accordingly

  • Mild: 500 mg
  • Medium: 1000 mg
  • Strong: 2000 mg

Start with a lower dosage and gradually increase it based on your body's response and tolerance. Consult a healthcare professional before starting any new supplement regimen.

What are the side effects of Acetyl-L-Carnitine?

Some individuals may experience mild side effects such as gastrointestinal discomfort, nausea, or headache. These side effects are usually temporary and can be alleviated by reducing the dosage or discontinuing use. If you experience severe or persistent side effects, consult a healthcare professional immediately.

Interactions of Acetyl-L-Carnitine

Most nootropics are relatively safe to use on their own. Combining them with other substances may cause them to suddenly become dangerous or life-threatening.

ALCAR may interact with certain medications, such as blood thinners or thyroid medications. Always consult a healthcare professional before starting any new supplement, especially if you are taking medications or have an existing medical condition.

Other namesALCAR
EffectsEnergy, Memory