How does bismuth subsalicylate work?
Bismuth subsalicylate coats the stomach and intestines, reducing irritation. It also has anti-inflammatory and antibacterial effects, which help ease symptoms of stomach upset.
What is bismuth subsalicylate used to treat?
Bismuth subsalicylate is commonly used for:
- Indigestion and heartburn
- Nausea and upset stomach
- Mild to moderate diarrhoea
- Traveller’s diarrhoea
- Gas and bloating
Who can take bismuth subsalicylate?
Bismuth subsalicylate is suitable for most adults and children over 16 years old, as recommended by a pharmacist or doctor.
Who might not be able to take bismuth subsalicylate?
Bismuth subsalicylate may not be suitable if you:
- Are allergic to aspirin or salicylates
- Have bleeding disorders or are taking blood thinners
- Have severe kidney disease or gout
- Are pregnant or breastfeeding
Can I take bismuth subsalicylate if I’m pregnant or breastfeeding?
Bismuth subsalicylate isn’t usually recommended during pregnancy or breastfeeding, as salicylates may pose a risk. Speak to your doctor for alternatives.
What if I miss a dose?
If you forget a dose, take it when needed. Do not exceed the recommended number of doses in 24 hours.
How effective is bismuth subsalicylate?
Bismuth subsalicylate is highly effective for short-term relief of digestive issues when used as directed.
What should I do if I take too much?
Taking too much bismuth subsalicylate can lead to salicylate toxicity, causing symptoms like ringing in the ears, confusion, or nausea. If this happens, seek medical help immediately.
What dose of bismuth subsalicylate is usually taken?
- For indigestion or diarrhoea: 30ml (liquid) or 2 tablets every 30–60 minutes as needed
Maximum: 8 doses in 24 hours
Follow the instructions on the packaging or as advised by your healthcare provider.
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What are the side effects of bismuth subsalicylate?
Common side effects include:
- Blackened stools or tongue (harmless and temporary)
- Constipation
- Mild nausea
Serious side effects, such as allergic reactions or unusual bleeding, require urgent medical attention.
How should I take bismuth subsalicylate?
Bismuth subsalicylate is available as chewable tablets or a liquid suspension. Shake the liquid well before use and use the provided measuring cup or spoon.
When should bismuth subsalicylate be taken?
It should be taken as needed for digestive symptoms, but not for more than two days without medical advice.
What are the brand names for bismuth subsalicylate?
Bismuth subsalicylate is available as a generic medicine, but some branded versions include:
- Pepto-Bismol
Final thoughts
Bismuth subsalicylate is an effective over-the-counter treatment for digestive upset, but it should be used as directed. If symptoms persist or side effects occur, speak to your doctor or pharmacist.
