My insurance company has limited me on Calcium Channel Blockers to one pill per day. NIFEDIPINE only comes in 60 mg tabs. I need 120 mg. I see other Calcium Channel Blockers such as CARTIA XT, DILTIAZEM HCL and TAZTIA XT offering 120 mg tabs. Will one of these per day equal the effects of two 60 mg NIFEDIPINE tabs?