Pectrolyte is a South African anti-diarrhoeal suspension combining kaolin and pectin with salts including sodium and potassium chloride and sodium lactate. It is used for short-term relief of diarrhoea. It is a compound preparation, so check the full ingredient list on your pack — particularly before giving it to a child.
What is Pectrolyte?
Pectrolyte is registered in South Africa as a Schedule 2 suspension, available from a pharmacist. Its listed components include:
| Component | Role |
|---|---|
| Kaolin | Adsorbent clay; binds gut contents and adds bulk |
| Pectin | Soluble fibre; adds bulk and firms stool |
| Sodium chloride, potassium chloride, sodium lactate | Salts, addressing losses from diarrhoea |
| Chlorodyne | A traditional compound preparation |
Two things are worth understanding about this product.
First, it works mainly by physical rather than pharmacological means. Kaolin is a clay that adsorbs — binds substances to its surface — and pectin is a soluble fibre. Together they absorb water and add bulk, so stools become firmer and less watery. Neither kills bacteria, clears a virus, nor treats inflammation. They change the consistency of what passes through.
This is a gentler approach than medicines such as loperamide, which actively slow the bowel. It is also generally less powerful.
Second, “Chlorodyne” is itself a compound preparation, not a single ingredient. Historically the name has covered mixtures whose composition has varied considerably between manufacturers and over time, and some traditional formulations contained substances that would not be appropriate for young children. This is the single most important reason to read the full ingredient list on your own pack and ask a pharmacist what it contains — especially before giving it to a child, and especially if you take other medicines. Do not assume the pack in front of you matches a description elsewhere.
The salts in the formulation address the fact that diarrhoea loses salts as well as water. They do not replace proper oral rehydration, which is covered below.
What is Pectrolyte commonly used for?
- Short-term relief of acute diarrhoea — the ordinary, sudden kind accompanying a stomach upset.
- Reducing stool frequency and firming consistency, which is often what people most want help with.
- Mild traveller’s diarrhoea, for symptom control.
- Settling an upset stomach alongside adequate fluids.
Rehydration matters more than stopping the diarrhoea. The real danger in diarrhoea is losing fluid and salts, particularly in young children and older people. Oral rehydration solution (ORS) is the treatment that addresses that, and it is what saves lives in serious diarrhoea. A product that firms the stool makes you more comfortable; it does not rehydrate you.
If you do only one thing for diarrhoea, make it appropriate fluid replacement. Pectrolyte is a comfort measure alongside that, not a substitute for it.
Most acute diarrhoea settles on its own within a couple of days without any medicine at all.
How Pectrolyte fits into this medicine category
| Group | Examples | What it does |
|---|---|---|
| Oral rehydration | ORS sachets | Replaces lost fluid and salts — the priority |
| Adsorbents / bulking agents | Kaolin, pectin (Pectrolyte) | Firm stool consistency; gentle |
| Antimotility | Loperamide | Actively slows the gut; more powerful |
| Antispasmodics | Hyoscine | Relieves cramping, not diarrhoea itself |
| Anti-nausea | Metoclopramide | Nausea and vomiting |
| Antibiotics | Ciprofloxacin, metronidazole | Only for specific proven infections |
Antibiotics are usually unnecessary for diarrhoea and occasionally harmful. See the digestive and stomach medicines hub.
What to check before using Pectrolyte
Read the full ingredient list on your pack, and ask a pharmacist to explain anything you do not recognise — particularly the chlorodyne component, and particularly before giving it to a child.
Do not use it if you have a fever with bloody diarrhoea. Those signs suggest an invasive bacterial infection needing assessment, not symptom suppression.
Ask a pharmacist or doctor first if you:
- Have blood or mucus in the stool.
- Have a high fever alongside diarrhoea.
- Have severe abdominal pain, or a swollen, tender abdomen.
- Have had recent antibiotics, as diarrhoea afterwards may be a C. difficile infection.
- Have inflammatory bowel disease.
- Have kidney disease or heart failure, where the sodium and potassium content is relevant.
- Are on a salt-restricted diet.
- Are pregnant or breastfeeding.
- Are giving it to a child, where suitability depends on age, weight and the exact formulation.
- Are elderly, where dehydration develops faster and matters more.
- Take other medicines. Kaolin and pectin can bind medicines in the gut and reduce their absorption — separate other medicines by two to three hours.
Shake the bottle well before each dose and use the measuring device provided.
Possible cautions and when to ask a pharmacist or doctor
Common effects are constipation, bloating and abdominal discomfort, particularly if it is continued after the diarrhoea has settled.
Seek medical attention if you develop:
- Signs of dehydration — marked thirst, little or dark urine, dizziness on standing, dry mouth. In a child: drowsiness, sunken eyes, no wet nappies, or no tears when crying. Do not wait on this one, especially in a young child or an older person.
- A swollen, distended or very tender abdomen.
- Bloody stools, or a fever developing after you started it.
- Severe or persistent vomiting, or inability to keep fluids down.
- Severe constipation once the diarrhoea settles.
- Unusual drowsiness or difficulty rousing, particularly in a child — stop and seek advice.
- Swelling of the face, lips or tongue, or difficulty breathing.
See a doctor if diarrhoea lasts more than two days, keeps returning, follows foreign travel, comes with unintended weight loss, or wakes you at night. Those patterns point to a cause that needs identifying rather than suppressing.
For a baby or young child with diarrhoea, seek advice early. Dehydration develops quickly at that age, oral rehydration solution is the priority, and anti-diarrhoeal preparations are often not appropriate.
Related medicine guides
Frequently asked questions
What is Pectrolyte used for? Short-term relief of diarrhoea — firming stools and reducing frequency — alongside salts to address losses. It is a pharmacy medicine.
Does it cure diarrhoea? No. Kaolin and pectin change stool consistency; they do not treat infection or inflammation. Most acute diarrhoea settles on its own.
Is it the same as oral rehydration solution? No, and this matters. ORS replaces lost fluid and salts and is the priority in diarrhoea. Pectrolyte is a comfort measure alongside it.
Can I give it to my child? Ask a pharmacist first, and check the full ingredient list. Suitability depends on age, weight and formulation, and rehydration is the priority.
Can I take it with my other medicines? Not at the same time. Kaolin and pectin can bind medicines and reduce absorption — separate them by two to three hours.
When should I not use it? With a fever and bloody diarrhoea, severe abdominal pain, or diarrhoea after recent antibiotics. Seek medical advice in those situations.
What is chlorodyne? It is itself a compound preparation whose composition has varied between manufacturers. Check your pack’s full ingredient list and ask a pharmacist.
How long can I take it? Only a couple of days for sudden diarrhoea. If it has not settled, see a doctor rather than continuing.