Medicine category
Digestive Medicines South Africa
Digestive complaints are among the most common reasons people visit a pharmacy, and most respond well to the right product used briefly. The skill is matching the medicine to the symptom, since the treatments for constipation, diarrhoea, reflux and cramps have nothing in common.

Ingredient type
Medicine category
Common uses
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Class
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South Africa access
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Common forms
Tablets, solutions
Key safety note
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What this category covers
This category covers medicines for heartburn and reflux, indigestion, constipation, diarrhoea, nausea and vomiting, stomach cramps and bloating.
Most digestive symptoms are short lived and settle on their own. Medicine makes the interval more comfortable and, in the case of diarrhoea and vomiting, helps prevent dehydration, which is the actual danger.
Persistent digestive symptoms are a different matter. They need a diagnosis rather than an ongoing supply of remedies.
Common groups in this category
- Heartburn and reflux medicines. Antacids for quick relief, alginates for reflux, and acid reducing medicines for frequent symptoms. See Heartburn Medicine South Africa, antacid tablets South Africa and antacid vs omeprazole.
- Anti diarrhoeal medicines. Including loperamide, which slows the bowel. See Diarrhoea Tablets South Africa.
- Rehydration solutions. The most important treatment for diarrhoea and vomiting, and the one most often skipped in favour of a tablet.
- Laxatives. Several types for constipation, working in different ways and over different timescales.
- Antispasmodics. Including hyoscine butylbromide, which relax the gut muscle to relieve cramping. See Medicine for Stomach Cramps.
- Anti nausea medicines. For nausea, vomiting and motion sickness.
How to choose by symptom
For burning behind the breastbone after meals, start with an antacid or alginate. For symptoms more than twice a week, ask about an acid reducing medicine instead.
For diarrhoea, rehydration comes first. Anti diarrhoeal tablets help where you need to function normally, but they are not suitable in every case, particularly with fever or blood.
For constipation, fluid, fibre and movement come before medicine, and the type of laxative matters for how quickly it works.
For cramping without other symptoms, an antispasmodic may help. For nausea, choose according to the cause, since motion sickness and other nausea respond to different medicines.
Safety, interactions and when to ask a pharmacist
Antacids and acid reducers interfere with the absorption of several other medicines, including thyroid treatment and some antibiotics. Space them apart and ask your pharmacist about specific gaps.
Ask before use if you are pregnant or breastfeeding, if the medicine is for a child or an older adult, if you have kidney or liver problems, or if you take chronic medicine. See omeprazole side effects for one commonly used long term option.
See a doctor for symptoms lasting more than two weeks, for any change in bowel habit that persists, or for symptoms that keep returning.
Seek assessment promptly for difficulty or pain when swallowing, unexplained weight loss, persistent vomiting, blood in vomit or stool, black tarry stools, a lump in the abdomen, or new digestive symptoms starting when you are older.
Get emergency help for severe abdominal pain, vomiting blood or material resembling coffee grounds, black tarry stools, a rigid tender abdomen, or signs of severe dehydration such as confusion, minimal urine or fainting. Call 10177 from a landline or 112 from a mobile phone.
Common questions
How long should digestive symptoms last?
Most settle within days. Anything persisting beyond two weeks needs assessment.
What matters most with diarrhoea?
Rehydration. Fluid replacement matters more than any tablet, particularly for children and older adults.
Do digestive medicines affect my other medicines?
Antacids and acid reducers can block absorption of several. Ask your pharmacist about spacing.
When is heartburn not heartburn?
Chest pain spreading to the arm, neck or jaw with sweating or breathlessness needs emergency assessment.
Should I take something for every symptom?
Not always. Many settle on their own, and fluid, diet and time do much of the work.
Information only and not a substitute for medical advice. Check the medicine leaflet and ask a pharmacist, doctor or qualified healthcare professional for guidance about your own situation.
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Uses.co.za provides independent medicine information for South Africa. We do not sell medicines and we are not a pharmacy. This page is general information, not personal medical advice.
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