3-CLT	3-chlorotyrosine
5-HIAA	5-hydroxyindoleacetic acid
5-HT	5-hydroxytryptamine
BDNF	Brain-derived neurotrophic factor
cAMP	Cyclic adenosine monophosphate
CoV	Coefficient of variance
Ctrl	Control
DA	Dopamine
DOPAC	3,4-Dihydroxyphenylacetic acid
ELISA	Enzyme-linked immunosorbent assay
ESC	Escitalopram
FC	Frontal cortex
GABA	Gamma-aminobutyric acid
HC	Hippocampus
HPA axis	Hypothalamic–pituitary–adrenal axis
IFN-γ	Interferon-gamma
HPLC-ECD	High-Performance Liquid Chromatography with Electrochemical Detection
MES	Mesembrine
NWU	North-West University
OFT	Open field test
PDE4	Phosphodiesterase 4
PND	Postnatal day
SPT	Sucrose preference test
ST	Sceletium tortuosum
TYR	Tyrosine
TNF-α	Tumor necrosis factor-alpha
UCMS	Unpredictable chronic mild stress
ZEM	Zembrin®