The present study aimed to investigate the in vitro effects of isoschaftoside isolated from Syngonium podophyllum on pig kidney Na+,K+-ATPase. The Na+, K+-ATPase activity was determined by colorimetric measurement of inorganic phosphate (Pi), resulting from ATP hydrolysis. Isoschaftoside significantly decreased the renal Na+, K+-ATPase activity at the highest concentration as well as at a lower concentration. Our work suggests that isoschaftoside is a promising compound for the treatment of hypertension.