My wife has had diarrhea for 10 days. Took her to the ER XMAS night, they gave her some liquid potassium as the blood test revealed low potassium level, however, the ER doctor said they don t treat stomach virus/flu, they just let it run it course. It s been 10 days, and the illness continues. My wife is 74, her family doctor has prescribed dicyclomine, which is not recommended for people over 65, plus is can cause hallucinations which my wife has had several times. Is there any OTC medication she can take?