1. Home

  2. Habit Directory

  3. L-acetyl carnitine
L-acetyl carnitine

L-acetyl carnitine

Discover More Habits
Pencil icon


L-carnitine is a naturally occuring nutrient and a dietary supplement. It plays a crucial role in the production of energy by transporting fatty acids into your cells’ mitochondria. The mitochondria act as engines within your cells, burning these fats to create usable energy. Often called ALCAR, Acetyl-L-Carnitine is the most effective form of L-carnitine for energy and optimal brain function.

Finger up icon

Possible Benefits

  • It may even benefit people with neurodegenerative diseases
  • Help prevent age-related mental decline
  • Improve markers of learning
Gear icon

Required Equipment

L-acetyl carnitine

Question mark icon

How to Do It

Take 1,000 mg once to twice daily. Take in the morning and/or early afternoon.

Gear icon

Why it works

  • 2,000 milligrams of L-carnitine reduced fatigue and increased muscle function in older adults
  • Acetyl-L-carnitine may also help boost brain health and function as you age
Clock icon

Time Commitment

2-5 minutes 

Calendar icon

Suggested Frequency

6 times per week 

Clock icon

Time of Day

Morning and/or afternoon

Warning icon

Possible Side Effects

Can cause nausea and stomach discomfort

Notes icon


  • Purchase the acetyl-L-carnitine version of this supplement
Sources list icon

Supporting Studies and Articles

Expand Collapse
  1. Malaguarnera M, Cammalleri L, Gargante MP, Vacante M, Colonna V, Motta M. L-Carnitine treatment reduces severity of physical and mental fatigue and increases cognitive functions in centenarians: a randomized and controlled clinical trial. Am J Clin Nutr. 2007;86(6):1738-1744.
  2. Pistone G, Marino A, Leotta C, Dell'Arte S, Finocchiaro G, Malaguarnera M. Levocarnitine administration in elderly subjects with rapid muscle fatigue: effect on body composition, lipid profile and fatigue. Drugs Aging. 2003;20(10):761-767. doi:10.2165/00002512-200320100-00004
  3. Traina G. The neurobiology of acetyl-L-carnitine. Front Biosci (Landmark Ed). 2016;21:1314-1329. Published 2016 Jun 1. doi:10.2741/4459
  4. Hathcock JN, Shao A. Risk assessment for carnitine. Regul Toxicol Pharmacol. 2006;46(1):23-28. doi:10.1016/j.yrtph.2006.06.007
Category icon


 Immunity  Energy  Productivity  Focus  Memory  Sharpness
Discover More Habits

More Habits

Rate Habit

L-acetyl carnitine

Contact us





Thank you

Thank you for your message. It has been sent.