| http://www.w3.org/ns/prov#value | - Excipients are distinguished from solvents such as EtOH, which are used to dissolve drugs in formulations, from non-ionic surfactants such as Tween 20, which are used to solubilize drugs in formulations, and from preservatives such as benzyl alcohols and methyl or propyl parabens, which are used to prevent or inhibit microbial growth.
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