What Is Acetyl-L-Carnitine?
Acetyl-L-carnitine is a naturally occurring compound found throughout the human body. It can be obtained through the diet (from red meat and dairy), although the body can also make the compound using amino acids. Acetyl-L-carnitine is also available in
dietary supplements, which are claimed to be useful for treating a number of different medical conditions.
Acetyl-L-carnitine is essential for proper functioning of mitochondria, the "energy factories" of human cells. For most people, the body can make plenty of this compound on its own, making supplementation unnecessary. However, for some individuals (such as premature infants or people with certain genetic defects), supplementation with some form of carnitine (such as acetyl-L-carnitine) is necessary. In critical situations, the use of the prescription product levocarnitine (Carnitor®) is usually preferred.
It is not entirely clear exactly how this compound works for the various conditions for which it is used, although different mechanisms have been suggested by researchers.
Is Acetyl-L-Carnitine Effective?
Preliminary research suggests that this supplement might be effective for a number of different uses, although more research is necessary to confirm these early findings
(see Does Acetyl-L-Carnitine Work? for more information).
As with most
dietary supplements, there is no well-established standard dosage for acetyl-L-carnitine, although some information can be obtained from clinical trials that used the supplement.
Even though it is a "natural" product, acetyl-L-carnitine can cause side effects. In general, however, the supplement is well tolerated, especially if used appropriately.
(Click Acetyl-L-Carnitine Side Effects to learn more, including potentially serious side effects you should report immediately to your healthcare provider.)
Safety Issues With Acetyl-L-Carnitine
This supplement is generally considered safe for many people, especially when used appropriately. However, some people may be more likely to experience problems with it than others. Therefore, you should talk with your healthcare provider prior to taking acetyl-L-carnitine if you have:
- An underactive thyroid (hypothyroidism)
- Seizures or epilepsy
- Any chronic medical condition
- Any allergies, including allergies to foods, dyes, or preservatives.
Also, let your healthcare provider know if you are:
Make sure to tell your healthcare provider about any other medicines you are taking, including prescription and nonprescription medications, vitamins, and herbal supplements.
What If I Take an Overdose?
It is not clear what exactly to expect from an overdose with this supplement. If you think you or someone else may have taken too much acetyl-L-carnitine, it is important to seek immediate medical attention.
How Should Acetyl-L-Carnitine Be Stored?
Refer to the label of your individual product for information on how best to store it. Keep all medications and supplements out of the reach of children.
