Fat-soluble vitamin concentrations in hypercholesterolemic children treated with colestipol.

In summary: (1) Colestipol therapy plus diet reduced total cholesterol 19 +/- 3% in 11 hypercholesterolemic children after two months and 13 +/- 5% after two years in five children. (2) Diet therapy did not significantly reduce serum concentration of any of the fat-soluble vitamins or folate. (3) During 24 months of colestipol therapy plus diet serum vitamin A and E concentrations did decrease in the five patients with good drug adherence (vitamin A, 68 +/- 11 vs 35 +/- 4 microgram/100 ml, P less than .005) (vitamin E, 14 +/- 1 vs 11 +/- 1 microgram/ml, P less than .05). However, those concentrations remained within normal limits. (4) Colestipol therapy plus diet had no effect on prothrombin time, serum 25-hydroxycholecalciferol, folate, or calcium metabolism (as studied by sequential determination of serum total and ionized calcium phosphorus, alkaline phosphatase, and parathyroid hormone).