DMAE(dimethylaminoethanol)
DMAE(dimethylaminoethanol) is a component of cell membranes and is thought be a precursor of the neurotransmitter acetylcholine.

DMAE has a similar effect as an amphetamine, though not one in itself. In studies, DMAE has been shown to improve concentration and cognitive function in the elderly and increase alertness. It has also been used in the treatment of Attention deficit disorder(ADD), chronic fatigue, fibromyalgia syndrome, anxiety and tardive dyskinesia.

Dosage:The recommended dosage range for DMAE is 100-500mg per day beginning with a lower dosage and gradually increasing the dosage. According to studies, alterness and mental powers are improved with a dosage of 400mg per day .
Precautions: DMAE supplements should not be used during pregnancy or by persons with manic depression or epilepsy.