Acetyl-L-carnitine (ALCAR) is a substance that is becoming increasingly important in the modern dietary supplement and health industry. As a form of L-carnitine that occurs naturally in the human body, it plays a crucial role in energy metabolism and brain function. This comprehensive guide looks at its discovery, its uses and dosages, the conditions it may alleviate, recommended complementary supplements and herbal remedies, food sources and possible side effects.

The discovery of ALCAR

Research into L-carnitine and its derivatives such as ALCAR began in the early 1900s, but the specific benefits of ALCAR have only been fully explored in recent decades. ALCAR has been identified as an enhanced form of carnitine that can more easily cross the blood-brain barrier, making it a key factor in energy production and cognitive function.

Forms of application and dosage

ALCAR can be taken in various forms, including capsules, powder and liquid supplements. The choice of form depends on personal preference and specific health goals. The recommended daily dose varies according to individual needs and can range from 500 mg to 2,000 mg. It is advisable to start with a low dose and gradually increase it to test tolerance.

ALCAR: Healing of diseases

ALCAR has the potential to support a range of health conditions:

  • Neurodegenerative diseases: Studies suggest that it may alleviate the symptoms of conditions such as Alzheimer’s and Parkinson’s by supporting neuronal energy production and function.
  • Cardiovascular disease: It may promote heart health by improving blood flow and reducing inflammation.
  • Diabetes: It helps regulate blood sugar levels and improve insulin sensitivity.
  • Fatigue: It can increase physical and mental energy, helping with general fatigue and chronic fatigue syndrome.

Complementary food supplements and medicinal plants

To maximize the benefits of ALCAR, it may be useful to take complementary supplements and herbal remedies:

ALCAR: Food sources

Although ALCAR is mainly taken as a dietary supplement, it can also be absorbed through the consumption of certain foods. Good natural sources are:

  • Red meat: lamb and beef in particular are rich in L-carnitine.
  • Fish and chicken: Provide moderate amounts of carnitine.
  • Dairy products: Contain carnitine in smaller amounts.

Possible side effects

ALCAR is generally well tolerated but may cause side effects in some people, especially when taken in high doses. Possible side effects include:

  • Indigestion: Including nausea, vomiting and diarrhea.
  • Restlessness and sleep disturbances: Especially if taken late in the day.
  • Odor perceptions: A fishy body odor may occur in some individuals, due to metabolism.

It is important to consult a health professional before starting ALCAR supplementation, especially if you are pregnant, breastfeeding, have a chronic medical condition or take regular medication.

Natural medicine and ALCAR

In natural medicine, ALCAR is highly valued for its ability to support energy metabolism and its neuroprotective properties. It is often used in treatment plans for conditions associated with cognitive deficits and energy loss. ALCAR is also considered a supportive agent in anti-aging medicine, as it can potentially help improve quality of life by promoting vitality and physical performance.


Acetyl-L-carnitine is a promising dietary supplement that may offer a wide range of health benefits, from improving brain function and energy production to aiding in the treatment of neurodegenerative and cardiovascular diseases. Its ability to effectively cross the blood-brain barrier makes it a key component in natural health care. Supplements with omega-3 fatty acids, coenzyme Q10, ginkgo biloba and turmeric can enhance its effects. Although it is found in certain foods beyond supplements, deliberate supplementation is often necessary to achieve therapeutic effects. While it is generally safe, potential users should be aware of possible side effects and seek medical advice if necessary. With its many uses in natural medicine, ALCAR offers an integrative approach to promoting health and well-being.

It is important to remember that dietary supplements are not intended as a substitute for a balanced diet and healthy lifestyle, but as a complement to these. Careful consideration of individual health needs and goals, as well as professional advice, are critical to getting the most benefit from ALCAR and other supplements.

Published on: 24. March 2024


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