If the loose motion
started after eating the turkey sandwich then it appears to be case of intestinal infection which has to be treated by a full course of ciproand flagyl for 14 days.
If the loose motions predate the eating of the turkey sandwich then it is due to bacterial superinfection
perhaps due to antibiotic usage . this would require probiotic
therapy for 14 days consisting of econorm
sachets and buttermilk.
Consuming belladona for along time would not be beneficial.