What is the most logical next event?

How to cure diarrhea
Drink water and other fluids to restore vitamins and minerals.
When you have diarrhea, your body sheds fluids that contain needed vitamins and minerals. It is important to get those minerals back in fluids, especially water and sports drinks.
Combatting dehydration is your primary medical concern with diarrhea. If you are vomiting in addition to having diarrhea, be sure to take frequent, small sips of liquid instead of drinking lots of liquid at a time.