Acetyl L-Carnitine Powder may help support brain health and cognitive function by increase levels of acetylcholine, an important neurotransmitter. It crosses the blood-brain barrier and improves absentmindedness and mild memory problems associated with aging. Acetyl L-Carnitine supports older adults by lessening fatigue in body and mind. It may also help promote peripheral nerve health and vibratory sensation. Along with L-Carnitine, Acetyl-L-Carnitine may help promote sperm motility and male fertility.