Polyethylene glycol monostearate
Macrogol stearate (pending)
Consists of PEG-32 (MW 1500) esters of palmitic (C16) and stearic (C18) acids
153 ± 31
Solubilizer for low log P APIs and bioavailability enhancer. Single excipient formulation system: self-emulsifies in aqueous fluid into micellar solution—LFCS Type IV. Use in melt processes (granulation, extrusion), granulation, and compression. Wetting agent. Safety of use is inferred by precedence of use in approved pharmaceutical products.