6-HMLT	6-Hydroxymelatonin
AMS-6	Anionic surfactant templated mesoporous silica
APES	(3-Aminopropyl)triethoxysilane
CAP	Cellulose acetate phthalate
CYP	Cytochrome P450 enzyme
DMEM	Dulbecco’s modified Eagle’s medium
DMSO	Dimethyl sulfoxide
DSC	Differential scanning calorimetry
FBS	Foetal bovine serum
FT-IR	Fourier-Transform Infrared spectroscopy
GI	Gastrointestinal
HBSS	Hank’s balanced salt solution
HEPES	4-(2-Hydroxyethyl) piperazine-1-ethane sulfonic acid
HPLC	High-performance liquid chromatography
MLT	Melatonin
PBS	Phosphate-buffered saline
PEST	Penicillin-streptomycin solution
RT	Room temperature
SEM	Scanning electron microscopy
SGF	Simulated gastric fluid
SIF	Simulated intestinal fluid
TEER	Transepithelial/transendothelial electrical resistance
TEM	Transmission electron microscopy
TEOS	Tetraethyl orthosilicate
TGA	Thermogravimetric analysis
Tmax	time to reach maximal concentration
XRD	X-rays diffraction.