HI, I Help An Elderly Woman Organize Her Medication Every

HI, I help an elderly woman organize her medication every month and am looking on this site to be sure that the drug interactions will not cause her problems. She takes six and one-half different pills daily. I am checking to see whether or not she should be taking them with food, as well as finding out about the various drug interactions. She takes Digoxin, Coumadin, Carvedilol, Klor-Con, Lisinopril, Spironolactone and Furosemide every day. Do you see any problems?