Losartan versus valsartan any reason to switch to valsartan?

Drug choices. Both losartan (l) and valsartan (v) are drug of the angiotensin receptor blocker class. Perhaps you were switched due to your BP was not controlled on the dose of the l you were on. Both have few side effects and reduce BP and proteinuria quite well. L should be given twice a day and v can be given once daily for maximum their maximum effect. Check with your physician for her thoughts.