indeed
the purpose of magnesium sulfate is to 'dry' your nonpolar solvent containing the alkaloids in freebase form, which might have some water in it, and decant the solvent to another container.
(the way to do it): perform normal a/b, extract with nonpolar solvent, pour solvent over a small amount of epson salts, and pour the solvent into a dish for evap or put in a container for freeze precip.
"Nothing is true, everything is permitted." ~ hassan i sabbah
"Experiments are the only means of attaining knowledge at our disposal. The rest is poetry, imagination." -Max Planck