Patients were randomly assigned to receive either 6 mmol KNO3 first (n = 41) or 6 mmol potassium chloride (KCl) first (n = 43) three times daily for 6 weeks, with a 1-week washout period in between.

Tying these 2 strands together is SSaSS (Salt Substitution and Stroke Study), 44 which was a cluster RCT conducted in 600 Chinese villages, randomized to a sodium substituted salt (75% sodium chloride ...