Zs Texas Ltd

To evaluate the effectiveness of two different doses (5 and 10 g) of ZS (qd) given orally for 28 days to maintain normokalemia (serum potassium [S-K] within the range of 3.5 to 5.0 mmol/L, inclusive) in patients with hyperkalemia at baseline who achieved normokalemia after a 48-hour open-label period.

To characterize the effects of 5 or 10 g ZS daily for 4 consecutive days on urinary potassium excretion in healthy Chinese subjects receiving a standard meal