Hi. Mother placed on Ranexa ER 500 mg 1 tab 2 times a day while in hospital. She has been taking now for 3 to 4 days. Her mobility has changed greatly, complaining of gas and loose bowels, shortness of breath. Can't seem to get her legs moving, loss of balance. Can this be a result of the medication? I am also seeing warning to not discontinue suddenly. Please advise. My email address is YYYY@YYYY . Thank you