α4β2 nAChRs	Alpha-4 beta-2 neuronal nicotinic acetylcholine receptors
BD	Bipolar Disorder
BDNF	Brain-Derived Neurotrophic factor
C_max	Maximum Plasma Concentration
FDA	Food and Drug Administration
NMDA	N-methyl-D-aspartate receptors
NRT	Nicotine Replacement Therapy
OR	Odds Ratio
RCT	Randomized Controlled Trial
SAEs	Serious Adverse Events
SCZ	Schizophrenia