AstraZeneca, a global, innovation-driven biopharmaceutical business acquire ZS Pharma, a biopharmaceutical company based in San Mateo, California. ZS Pharma uses its proprietary ion¬-trap technology to develop novel treatments for hyperkalaemia (high potassium levels), a serious condition of elevated potassium in the bloodstream, typically associated with chronic kidney disease (CKD) and chronic heart failure (CHF).