Administration of a 27-hydroxycholesterol or related compound or sterol-27-hydroxylase stimulant to prevent restenosis following vascular endothelial injuri
A method for preventing or reducing restenosis wherein a 27-hydroxycholesterol or a 25,26 and/or 27-aminocholesterol, or a sterol 27-hydroxylase stimulant, is administered in a restenosis preventing and/or reducing amount.