Infections
Medicines for Cholera
A bacterial infection spread through contaminated water and food that causes severe watery diarrhoea and dehydration — the main treatment is urgent rehydration, and it is largely preventable.
Education and reference only. This explains which medicines are used and why, in plain language — it deliberately contains no doses and is not a substitute for advice from your doctor or pharmacist. Always discuss your own treatment with a qualified clinician, and check the BNF and the product labelling for prescribing detail.
Quick answer
What is Cholera?
Cholera is an infection of the intestine caused by bacteria (Vibrio cholerae), spread mainly through water or food contaminated with the bacteria, typically in areas with unsafe water and poor sanitation, and during humanitarian crises. It is very rare in travellers who follow food and water precautions and stay in standard tourist areas.
- How it is treated: The cornerstone of treatment is rapid rehydration to replace the fluids and salts lost through diarrhoea — usually with oral rehydration solution, and with fluids given into a vein in severe cases.
- Self-care: Safe water and food practices, good sanitation and hand hygiene prevent cholera.
- When to seek help: Seek urgent medical care for profuse watery diarrhoea with rapid dehydration, especially after travel to an affected area — dehydration can become life-threatening quickly.
What it is
Cholera is an infection of the intestine caused by bacteria (Vibrio cholerae), spread mainly through water or food contaminated with the bacteria, typically in areas with unsafe water and poor sanitation, and during humanitarian crises. It is very rare in travellers who follow food and water precautions and stay in standard tourist areas. Its hallmark is the sudden onset of profuse, watery diarrhoea (classically described as "rice-water"), often with vomiting, which can cause rapid and severe dehydration. Many people have mild or no symptoms, but severe cases can become life-threatening within hours from fluid loss if not treated. Because the danger is dehydration, prompt fluid replacement is the priority.
How it is treated
The cornerstone of treatment is rapid rehydration to replace the fluids and salts lost through diarrhoea — usually with oral rehydration solution, and with fluids given into a vein in severe cases. This simple treatment is life-saving and is the main reason deaths can be prevented. Antibiotics may be used in more severe cases to shorten the illness and reduce spread, and zinc helps in children. Prevention centres on safe water and food, good sanitation and hand hygiene; an oral cholera vaccine is available and recommended for certain travellers (such as aid workers) going to higher-risk areas. Prompt attention to dehydration is the key message.
For this condition, these medicines
Medicine classes used for Cholera
Each links to a full, dose-free guide — what it is, how it works, who can and cannot use it, side effects, interactions and FAQs.
Beyond medication
Lifestyle and self-care
Safe water and food practices, good sanitation and hand hygiene prevent cholera. For higher-risk travellers, an oral vaccine is available. If diarrhoea occurs, prompt and continued rehydration (oral rehydration solution) is vital.
When to get help
When to see a doctor
Seek urgent medical care for profuse watery diarrhoea with rapid dehydration, especially after travel to an affected area — dehydration can become life-threatening quickly. Keep taking rehydration fluids while seeking help.
Not sure how urgent it is? It is always OK to call NHS 111 for advice, day or night.
Answers
Cholera: frequently asked questions
What is the main danger of cholera?
Severe dehydration from profuse watery diarrhoea, which can become life-threatening within hours. This is why rapid rehydration is the key, life-saving treatment.
How is cholera prevented?
Through safe water and food, good sanitation and hand hygiene. An oral cholera vaccine is available and recommended for certain higher-risk travellers, such as aid workers.
Sources
Where this is drawn from
- NHS — Cholera
- TravelHealthPro — Cholera
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