title: Concurrent administration of antacids and prednisone: effect on serum levels of prednisolone.
abstract: 1 Specific radioimmunoassays have been developed for the measurement of prednisolone and prednisone in serum. 2 Serum prednisolone levels have been measured following the administration of prednisone both with and without antacids. 3 There were no significant differences in the values of Cmax (mean +/- s.d.) (251 +/- 80 ng/ml with, 245 +/- 69 ng/ml without antacid), AUC (1430 +/- 469 ng ml-1 h-1 with, 1406 +/- 530 ng ml-1 h-1 without antacid) or Tmax (1.6 +/- 0.6 h with, 1.6 +/- 0.8 h without antacid). 4 Serum prednisone levels were less than 20% of prednisolone levels at all time intervals in the subjects studied. 5 Concurrent antacid administration has no significant effect on serum prednisolone levels attained.
mesh_terms: D000863:Antacids / Q000494:pharmacology*; D004347:Drug Interactions; D006801:Humans; D011239:Prednisolone / Q000097:blood*; D011241:Prednisone / Q000378:metabolism*; D013997:Time Factors
chemical_list: D000863:Antacids; D011239:Prednisolone; D011241:Prednisone