What Causes Weakness In Legs While On Xarelto, Sotalol And Spironolactone?

Hi my mom is 84 years old and she is experience weakness in her legs....she best describes them as feeling like jello. Her major meds that she is on are: Xarelto, Sotalol, and Spironolactone. Could any of these meds be causing her to feel this way. Thank you.