Join the World's Leading Personal Health and Guidance System: Truestar Health.
Free nutrition plans, exercise plans, and all around wellness plans. Join now for free!


Also indexed as: Acetylcarnitine, ALC, L-Acetyl-Carnitine

Buy TrueIQ - Acetyl L-Carnitine

Acetyl-L-carnitine is similar in form to the amino acid L-carnitine and also has some similar functions, such as being involved in the metabolism of food into energy. The acetyl group that is part of acetyl-L-carnitine contributes to the production of the neurotransmitter acetylcholine, which is required for mental function.

Where is it found?

Acetyl-L-carnitine is a molecule that occurs naturally in the brain, liver, and kidney. It is also available as a dietary supplement.

Acetyl-L-carnitine has been used in connection with the following conditions (refer to the individual health concern for complete information):

Science Ratings Health Concerns

Age-related cognitive decline


Alzheimer’s disease

Cerebellar ataxia, degenerative

Depression (for elderly people)

Down’s syndrome

Erectile dysfunction (in combination with L-carnitine)

Macular degeneration (in combination with fish oil and coenzyme Q10)

Type 1 diabetes

Type 2 diabetes



Male infertility

Peripheral neuropathy

3Stars Reliable and relatively consistent scientific data showing a substantial health benefit.
2Stars Contradictory, insufficient, or preliminary studies suggesting a health benefit or minimal health benefit.
1Star For an herb, supported by traditional use but minimal or no scientific evidence. For a supplement, little scientific support and/or minimal health benefit.

Who is likely to be deficient?

Acetyl-L-carnitine levels may decrease with advancing age. However, because it is not an essential nutrient, true deficiencies do not occur.

How much is usually taken?

Most research involving acetyl-L-carnitine has used 500 mg three times per day, though some research has used double this amount.1

Are there any side effects or interactions?

Side effects from taking acetyl-L-carnitine are uncommon, although skin rash, increased appetite, nausea, vomiting, agitation, and body odor have been reported in people taking acetyl-L-carnitine.2 3

Are there any drug interactions?
Certain medicines may interact with acetyl-L-carnitine. Refer to drug interactions for a list of those medicines.


1. No authors listed. Acetyl-L-Carnitine. Altern Med Rev 1999;4:438–41 [review].

2. Thal LJ, Carta A, Clarke WR, et al. A 1-year multicenter placebo-controlled study of acetyl-L-carnitine in patients with Alzheimer’s disease. Neurology 1996;47:705–11.

3. Rai G, Wright G, Scott L, et al. Double-blind, placebo controlled study of acetyl-L-carnitine in patients with Alzheimer’s dementia. Curr Med Res Opin 1990;11:638–47.

All Indexes
Health Issues Men's Health Women's Health
Health Centers Cold, Flu, Sinus, and Allergy Diabetes Digestive System Pain and Arthritis Sports Nutrition
Safetychecker by Drug by Herbal Remedy by Supplement
Homeopathy by Remedy
Herbal Remedies by Botanical Name
Integrative Options
Foodnotes Food Guide by Food Group Vitamin Guide