the monthly cost of medication , based on the lowest listed price in the drug topics red book and also in the red book update , was approximately 12 % higher for the hydrochlorothiazide and wax-matrix potassium regimen than for the amiloride-hydrochlorothiazide combination , whereas the federal agency contract price for the latter was significantly higher .
C0020261
hydrochlorothiazide
C0717400
amiloride-hydrochlorothiazide