Table 2: Neurochemicals isolated from various microbes (as from [140]).

GenusNeurochemical

Lactobacillus and BifidobacteriumGABA
Escherichia, Bacillus, and SaccharomycesNorepinephrine
Candida, Streptococcus, Escherichia, and  EnterococcusSerotonin
Bacillus and SerratiaDopamine
LactobacillusAcetylcholine