What are Pepto-Bismol chewable tablets?
Pepto-Bismol chewable tablets are designed to quickly ease stomach troubles without the need to measure out liquids or swallow with a drink. They contain the active ingredient bismuth subsalicylate, and are available over the counter, meaning they don’t require a prescription.
What are they used for?
Pepto-Bismol chewable tablets are used to provide fast symptom relief from:
As digestive symptoms often overlap, it can help to have a solution that can handle multiple symptoms at once.
How do Pepto-Bismol chewable tablets work?
Pepto-Bismol chewable tablets form a protective coating over the lower part of your food pipe, and in your stomach and gut. This helps protect them from stomach acid and eases feelings of pain and discomfort.
How long do they take to work?
Pepto-Bismol chewable tablets typically begin to work within 30 to 60 minutes.
How long do they last for?
If symptoms persist, you can have another dose after 30 to 60 minutes, with a maximum of eight doses in 24 hours.
You shouldn’t take any Pepto-Bismol product for more than two days in a row, as this will increase your risk of severe side effects.
How to take Pepto-Bismol chewable tablets
You can take Pepto-Bismol with or without food, by either chewing the tablets or letting them dissolve on your tongue. You should chew or dissolve two tablets (one dose) in your mouth.
If you're taking Pepto-Bismol for diarrhoea, make sure you drink plenty of fluids to avoid dehydration.
Side effects of Pepto-Bismol
You’re unlikely to get any side effects if you follow the instructions for taking Pepto-Bismol. However, like all medicines, Pepto-Bismol can cause side effects in some people.
One common side effect is your stool and/or tongue turning black. This happens when bismuth (the active ingredient in this medicine) comes into contact with small amounts of sulphur in your saliva and digestive system. This is a harmless side effect and usually goes away within several days after you stop taking the medicine.
When to seek medical help
If your tongue or your stool is still black after you've stopped taking Pepto-Bismol for several days, speak to your doctor or a pharmacist.
Seek emergency medical attention if you notice any signs of a serious allergic reaction, symptoms of which include swelling of the lips, mouth, throat or tongue, skin rash, breathing difficulties and/or loss of consciousness.
When not to take Pepto-Bismol chewable tablets
Most adults and young people aged 16 years and over can take Pepto-Bismol, but there are times that it shouldn’t be used. For example, do not take this medicine if you are pregnant or breastfeeding.
To make sure this medicine is safe for you, tell your doctor or pharmacist if you have:
- ever had an allergic reaction to bismuth subsalicylate or any of the other ingredients in Pepto-Bismol
- ever had an allergic reaction to aspirin or any other medicine
- diabetes
- gout
- a rare inherited condition called phenylketonuria where you cannot have aspartame
- have a blood clotting disorder
Storage information
For best results, the product should be stored at room temperature. It should not be exposed to temperatures above 40°C or below 0°C. It should be stored in the original packaging out of site and reach of children.
Alternatives to Pepto-Bismol chewable tablets
There are plenty of alternatives to consider if Pepto-Bismol chewable tablets aren’t right for you.
If tablets aren’t suitable for you, Pepto-Bismol Oral Suspension may be a better option, providing the same fast, effective relief.
Depending on your symptoms, other alternatives include:
- Loperamide for diarrhoea relief
- Rennie for indigestion and heartburn relief
Frequently asked questions about Pepto-Bismol chewable tablets
Should you drink water right after taking Pepto-Bismol?
You don’t need to drink water right after taking Pepto-Bismol chewable tablets, as they are designed to be chewed or dissolved on the tongue. However, it is recommended you drink plenty of fluids if you are treating diarrhoea, to prevent dehydration.
What works faster, Pepto pills or liquid?
Neither product works more quickly than the other. They both provide relief in 30-60 minutes.
Does Pepto settle your stomach?
Yes, Pepto-Bismol settles the stomach by forming a protective coat, shielding it from stomach acid and easing feelings of pain and discomfort.
Sources
About Pepto-Bismol (2022). NHS. [Accessed 8 July 2026]
Pepto Chewable Tablets Original. Pepto. [Accessed 8 July 2026]
