Pepto-Bismol to-Go Chewable Tablets, Cherry 24 ea (Pack of 8) - Pepto Bismol Cherry Chewable Tablets. When you have a sour stomach, Pepto's coating action calms and soothes your symptoms, providing fast digestive relief from nausea, heartburn, indigestion, upset stomach, and diarrhea. Maybe HSA/ FSA is eligible. Instructions: Chew or dissolve in the mouth. Adults and children 12 years and over: 2 tablets (1 dose) every ½ hour or 4 tablets (2 doses) every hour as needed for diarrhea. 2 tablets (1 dose) every ½ hour as needed for overindulgence (upset stomach, heartburn, indigestion, nausea). Do not exceed 8 doses (16 tablets) in 24 hours. Use until diarrhea stops but not more than 2 days. Children under 12 years: ask a doctor. Drink plenty of clear fluids to help prevent dehydration caused by diarrhea.