Discussions that mention nifedipine

High & Low Blood Pressure board

When all else fails, some people have good rresults with clonidine which acts on the central nervous system.

Couple other thoughts:
I think the edema from CCB's would better be relieved with Lasix than with HCTZ...them mechanism is different.
You might try one of the other generic CCB's like verapamil or nifedipine. CCB's differ a lot and perhaps one of these won't give you the swollen feet that the diltiazem is.

Stumper's idea of just Lasix might give you what you want. It works well for me. You'll probably need to supplement potassium.