What Pepto-Bismol is for
Pepto-Bismol (bismuth subsalicylate) is used to treat symptoms such as:
- indigestion
- acid reflux and heartburn
- feeling sick (nausea)
- diarrhoea
It works by reducing inflammation and forming a protective coating in your stomach, the lower part of your food pipe and your gut.
How to take Pepto-Bismol
Pepto-Bismol (bismuth subsalicylate) usually comes as a liquid you swallow or tablets you chew. You can take it with or without food.
Always check the packet or leaflet that comes with your medicine. Ask a pharmacist or doctor for advice if you're not sure how to take it or have any problems taking it.
How to take different types of Pepto-Bismol
Important
Do not take Pepto-Bismol for more than 2 days unless advised to by a doctor.
Stop taking it and see a GP if your symptoms get worse or do not get better.
If you take too much Pepto-Bismol
Taking an extra dose of Pepto-Bismol is unlikely to cause problems, but it's important to get medical advice if you take too much as it can be dangerous.
Urgent advice: Speak to a pharmacist as soon as possible if:
- you've taken more Pepto-Bismol than it says on the packet or leaflet
- you're taking Pepto-Bismol and start hearing ringing or buzzing in your ears (tinnitus)
If you're unable to speak to a pharmacist, or you took too much of your medicine on purpose, call NHS 111 for advice.
Find a pharmacyIf you're told to go to A&E, do not drive. Ask someone to drive you or call 999 and ask for an ambulance.
Bring the Pepto-Bismol packet or leaflet inside it, any remaining medicine, and any other medicines you take.
Side effects of Pepto-Bismol
Like all medicines, Pepto-Bismol (bismuth subsalicylate) can cause side effects, although not everyone gets them.
Common side effects
Possible side effects of Pepto-Bismol include:
- black poo
- a black tongue
These side effects are harmless and usually go away on their own.
Pepto-Bismol will not usually affect your ability to drive, ride a bike or use machinery.
Non-urgent advice: Speak to a pharmacist or doctor if:
- you have any side effects that bother you or do not go away
They may be able to give you advice about how to reduce any side effects.
Find a pharmacySerious side effects
In rare cases, Pepto-Bismol can cause a serious allergic reaction.
Symptoms of an allergic reaction (anaphylaxis) include a swollen throat or tongue, a raised, itchy rash and difficulty breathing.
Immediate action required: Call 999 if:
- you're taking Pepto-Bismol and think you might be having anaphylaxis
More about side effects
You can report any side effects you get on the Yellow Card Scheme website
Who can and cannot take Pepto-Bismol
Most people aged 16 years or older can take Pepto-Bismol (bismuth subsalicylate).
Do not give Pepto-Bismol to children aged 15 years or under because it can cause a serious condition called Reye's syndrome in rare cases.
Pepto-Bismol is not suitable for everyone. For example, it may not be suitable if you:
- have had an allergic reaction or serious side effect from bismuth subsalicylate before
- have had an allergic reaction or serious side effect from aspirin before
- have blood in your poo
- have a blood clotting disorder
- have gout
- have a stomach ulcer
Check the packet or leaflet that comes with your medicine to see if it's suitable for you. Speak to a pharmacist or doctor if you're not sure if you can use it.
Breastfeeding and Pepto-Bismol
Pepto-Bismol is not usually recommended if you're breastfeeding.
Check with a pharmacist or doctor before using Pepto-Bismol while you're breastfeeding. They may be able to recommend a different medicine.
Pregnancy and Pepto-Bismol
Pepto-Bismol is not usually recommended during pregnancy.
Talk to a doctor or pharmacist before taking Pepto-Bismol while you're pregnant. They may be able to recommend a different medicine.
Taking Pepto-Bismol with other medicines, food and drink
There are some medicines, remedies and supplements that may not mix well with Pepto-Bismol (bismuth subsalicylate).
These include:
- non-steroidal anti-inflammatory drugs (NSAIDs), such as aspirin and ibuprofen
- anticoagulants, such as warfarin and apixaban
- methotrexate, a medicine for rheumatoid arthritis, psoriasis or cancer
- some antibiotics, such as doxycycline
- some antidepressants
- some medicines for gout
- some medicines for diabetes
Check the packet or leaflet that comes with your medicine to see if it's suitable for you. Speak to a pharmacist or doctor if you're not sure if you can take it.
Food, drink and alcohol with Pepto-Bismol
You can eat and drink as usual when taking Pepto-Bismol.
Find out more about your medicine
To find out more about your medicine, you can:
- check the leaflet that comes with it
- speak to a pharmacist or doctor for advice