What is Pepto-Bismol Chewable Tablets? Pepto-Bismol Chewable Tablets contain 262mg of Bismuth Subsalcylate when ingested help to releive symptoms of nausea, heartburn, indegestion, stomach upset and diarrhea.  How to take Pepto-Bismol Chewable Tablets For adults and children over 16 years only: Chew or dissolve 2 tablets (one dose) in your mouth.  Repeat the dose every 30-60 minutes if needed. DO NOT TAKE MORE THAN 16 TABLETS (8 DOSES) IN 24 HOURS.  If used longer than 2 days or at higher than the recommended dosage the possibilty of side effects increases. Precautions DO NOT USE IF YOU ARE Under 16 allergic to salicylates including aspirin or any other ingredient  taking other salicylates including aspirin pregnant or breastfeeding  Always Read The Patient Information Leaflet Before Taking Any Medicine Or Aid