Table 3.

Most common porogen agents employed for the preparation of porous PLGA MPs

Porogen agents	Type	References
NaCl	Osmogens	Patel et al. (2012)
Ammonium bicarbonate	Gas-foaming agents	Lee et al. (2010)
Pluronics	Extractable porogens	Kim et al. (2006); Ni et al. (2017)
Sodium oleate	Extractable porogens	Jiang et al. (2014)
Gelatin	Extractable porogens	Kim et al. (2010)
Mustard oil	Extractable porogens	Biswal et al. (2020)
BSA	Osmogens	Lee et al. (2010)
Cyclodextrins	Osmogens	Lee et al. (2007), Ungaro et al. (2009)
Mineral oil	Extractable porogens	Nasr et al. (2013)