Gamma-Aminobutyric Acid is a naturally occurring neurotransmitter with central nervous system (CNS) inhibitory activity.

Sarcosine is a competitive inhibitor of the type I glycine transporter (GlyT1) and an N-methyl-D-aspartate receptor (NMDAR) co-agonist.

Evans Blue is a potent inhibitor of the uptake of L-glutamate into synaptic vesicles, also an AMPA/kainate receptor antagonist.

Acetylcholine iodide is a neurotransmitter found at neuromuscular junctions, autonomic ganglia, parasympathetic effector junctions, a subset of sympathetic effector junctions, and at many sites in the central nervous system.

Tamsulosin is a potent and selective α1a adrenergic receptor antagonist with Ki values of 0.13 nM, 1.92 nM and 0.18 nM for α1a-AR, α1b-AR and α1d-AR.

Perphenazine is a phenothiazine derivative and a dopamine antagonist with antiemetic and antipsychotic properties.

MPTP hydrochloride is a dopaminergic neurotoxin and cause selective destruction of dopaminergic neurons in animal models of parkinsonism.

Ondansetron is a highly specific and selective serotonin 5-HT3 receptor antagonist (Ki=6.16 nM), with low affinity for dopamine receptors.