Picamilon (also known as N-nicotinoyl-GABA, Pycamilon, and Pikamilon) is a drug formed by a synthetic combination of niacin and GABA. It was developed in the Soviet Union in 1969 and further studied in both Russia and Japan as a prodrug of GABA. Picamilon permeated the blood-brain barrier and then is hydrolyzed into GABA and niacin. The released GABA, in theory, would activate GABA receptors potentially producing an anxiolytic response. The second released component, niacin, is a vasodilator. Today picamilon is sold in Russia as a prescription drug and is used for the treatment of a variety of illnesses and disorders, ranging from depression to a migraine, neuro infections, senile psychosis, certain types of glaucoma, and even acute alcohol intoxication. As of 2015, the FDA classified picamilon as a substance that does not meet the requirements of a dietary supplement and is therefore no longer permitted to be sold in the United States.