Reduction of elevated total cholesterol (total-C), LDL-C, apolipoprotein B (ApoB), total-C: HDL-C ratio triglycerides & increasing HDL-C in hyperlipidemic & dyslipidemic conditions. Reduction of total mortality & risk of major CV events in adults w/ increased risk of atherosclerotic CV disease based on presence of CV disease risk markers. Primary dysbetalipoproteinemia (type III hyperlipoproteinemia); primary hypercholesterolaemia (type IIa including heterozygous familial hypercholesterolaemia & severe non-familial hypercholesterolaemia); combined (mixed) dyslipidaemia (type IIb); homozygous familial hypercholesterolaemia. Adjunctive therapy to diet to slow progression of atherosclerosis in adults as part of treatment strategy to lower total-C & LDL-C to target levels. Adjunct to diet to reduce total-C, LDL-C & ApoB levels in adolescents at least 1 yr post-menarche, 10-17 yr w/ heterozygous familial hypercholesterolaemia.