THORNE Acetil-L-Carnitina 500 mg - 60 Cápsulas

What is Acetyl-L-Carnitine?

Acetyl-L-carnitine (ALCAR) is an acetylated form of the amino acid L-carnitine, produced naturally in the body. This molecule plays an important role in cellular energy metabolism, facilitating the transport of fatty acids to the mitochondria for conversion into energy. THORNE offers this supplement in 500 mg capsules, with third-party certification verifying that the content matches what is indicated on the label. In addition, it is gluten-free, dairy-free, and soy-free.

Potential Benefits

Acetyl-L-carnitine offers multiple potential benefits supported by preliminary research and manufacturer experience. Some of the most notable are detailed below:

Support for brain function and mood

Acetyl-L-carnitine is valued for its potential to support brain function. According to THORNE, it promotes cognitive function and helps maintain healthy cortisol levels, which can contribute to a balanced mood.* This molecule's ability to cross the blood-brain barrier makes it especially interesting for neuronal health. Preliminary studies have explored its role in memory and concentration, although more research is needed to confirm these effects.

Nervous system health

The nervous system benefits from acetyl-L-carnitine support, as it has been suggested that it can improve nerve function and comfort in the extremities. This could translate into healthy nerve sensations in the hands and feet, an important aspect for those experiencing discomfort due to aging or lifestyle.* THORNE supports this use based on its clinical experience.

Men's health

In the field of men's health, acetyl-L-carnitine has been associated with promoting healthy sperm count and sperm motility, according to information provided by the manufacturer.* These effects are relevant for fertility and reproductive well-being.

Mechanism of action

Acetyl-L-carnitine acts as a transporter of long-chain fatty acids into the mitochondrial matrix, where they are oxidized to produce energy (ATP). In addition, the acetyl group can be donated for the synthesis of acetylcholine, a key neurotransmitter for memory and learning. This dual function distinguishes it from simple L-carnitine and makes it particularly relevant for brain and nervous metabolism.

Product characteristics

• Third-party certified: the content has been verified to ensure it matches the label.
• Gluten-free, dairy-free, and soy-free.
• THORNE is a trusted brand used by more than 100 professional sports teams and recommended by healthcare professionals.
• Easy-to-swallow 500 mg capsules.

Quality and trust

THORNE is recognized as the #1 clinical brand recommended by consumers and healthcare professionals, according to an independent survey conducted in 2026. Its products are used by more than 100 professional sports teams, reflecting its commitment to purity and efficacy. Each batch undergoes third-party testing to ensure it meets the highest standards, including heavy metals analysis, microbial contaminants, and stability.

How to use

It is recommended to take 1 capsule (500 mg) daily with a meal for optimal absorption. Do not exceed the recommended dose without consulting a healthcare professional. Maintain adequate water intake to support metabolism. Store in a cool, dry place, out of reach of children.

Frequently asked questions

Is it the same as L-carnitine? Not exactly. Acetyl-L-carnitine is a modified form with an acetyl group, which improves its absorption and its ability to cross the blood-brain barrier.

Can I take it with other supplements? Yes, it is generally safe to combine it with other supplements, but it is recommended to consult a healthcare professional to avoid interactions.

Is it suitable for vegans? THORNE does not specify whether the capsules are plant-based. It is recommended to contact the manufacturer directly for this information.

How long does a package last? With one capsule a day, the 60-capsule package lasts approximately two months.

Warnings

This product is not intended to diagnose, treat, cure, or prevent any disease. Consult a healthcare professional before starting any supplement, especially if you are pregnant, breastfeeding, taking medication, or have any medical condition. Generally well tolerated, but in high doses, it can cause digestive discomfort. Consult a professional if you experience any adverse effects.

*These statements have not been evaluated by the Food and Drug Administration (FDA) or the European Food Safety Authority (EFSA). This product is not intended to diagnose, treat, cure, or prevent any disease.