In the randomized phase , serum potassium was significantly lower during days @-@ with all @ zirconium cyclosilicate doses vs placebo ( @ mEq/L -LSB- @ % CI , @-@ @ -RSB- , @ mEq/L -LSB- @ % CI , @-@ @ -RSB- , and @ mEq/L -LSB- @ % CI , @-@ @ -RSB- for @ g , @ g , and @ g ; @ mEq/L -LSB- @ % CI , @-@ @ -RSB- for placebo ; P < @ for all comparisons ) .