Organization and Basis of Presentation

12 Months Ended

Dec. 31, 2017

Accounting Policies [Abstract]

Organization and Basis of Presentation

1.           ORGANIZATION AND BASIS OF PRESENTATION

Ardelyx, Inc., or “the Company,” is a specialized biopharmaceutical company focused on developing first-in-class, disruptive medicines for the treatment of renal diseases, which affect both the heart and the kidneys. Tenapanor, a first-in-class inhibitor of NHE3, is being evaluated in a second Phase 3 trial for the treatment of hyperphosphatemia in patients with ESRD who are on dialysis. The Company is also advancing a small molecule potassium secretagogue program, RDX013, for the potential treatment of hyperkalemia as well as tenapanor for the treatment of people with irritable bowel syndrome with constipation, or IBS-C, for which the Company is preparing to submit a New Drug Application (“NDA”) to the United States Food and Drug Administration (“FDA”) in the second half of 2018.

The Company operates in only one business segment, which is the development of biopharmaceutical products.