Koloride

Koloride is an electrolyte-glucose rehydration therapy used to replace fluid and electrolyte losses caused by diarrhoeal illness. Its use is classified by strength of evidence as follows:

• Established, first-line use (WHO/UNICEF-endorsed): Prevention and treatment of dehydration due to acute watery diarrhoea of any cause, including cholera, in infants, children, and adults.
• Guideline-supported use: Maintenance fluid and electrolyte replacement during and after an episode of diarrhoea or vomiting, alongside continued feeding or breastfeeding.
• Adjunct use: As follow-on oral therapy after initial intravenous fluid resuscitation in patients who presented with severe dehydration and have since been stabilised.
• Not indicated as sole therapy: In severe dehydration with hypovolemic shock, oral Koloride alone is not sufficient; immediate intravenous fluid replacement is required (an intravenous electrolyte solution may also be marketed under the same name for this purpose, and must only be given by a qualified health professional).

Each formulation of Cholera Saline is typically based on the WHO-recommended low-osmolarity oral rehydration salts (ORS) formula. A standard sachet, when dissolved in 1 litre of safe drinking water, provides approximately:

Exact salt content and excipients can vary slightly by manufacturer. Some presentations of Cholera Saline are supplied as a sterile intravenous electrolyte solution for severe dehydration, with sodium, potassium, chloride, and acetate/bicarbonate concentrations formulated to match fluid losses seen in cholera. Always check the specific product's label or pack insert for exact composition.

Koloride is a fluid and electrolyte replacement therapy rather than a conventional pharmacologic drug. It is formulated to replace the water, sodium, potassium, chloride, and bicarbonate/citrate lost in large amounts through watery diarrhoea and vomiting, most notably in cholera and other acute diarrhoeal illnesses. Koloride is available as an oral powder/solution (oral rehydration salts) for home and clinic use and, in some presentations, as a sterile solution for intravenous infusion in hospital for severe dehydration. It is a cornerstone of the World Health Organization's diarrhoeal disease management strategy and has substantially reduced diarrhoea-related mortality worldwide.

Koloride belongs to the therapeutic class of Oral/Intravenous Rehydration Salts – Fluid and Electrolyte Replenishers, used in the management of dehydration due to diarrhoeal disease.

Cholera Saline works through a physiological mechanism rather than a receptor-mediated drug action. Its glucose and sodium content exploits the intestinal sodium-glucose co-transporter (SGLT1), which remains functional even during severe secretory diarrhoea such as cholera. As sodium and glucose are absorbed together across the intestinal brush border, water is drawn passively along the resulting osmotic gradient, restoring hydration despite ongoing fluid losses. The potassium in Cholera Saline replaces losses from stool, and the citrate (or bicarbonate) component helps correct the metabolic acidosis commonly seen in dehydrated patients.

Dissolve one sachet of Koloride completely in the exact amount of clean drinking water specified on the label — never estimate this amount. Give by spoon, cup, or oral syringe in small, frequent sips, especially to infants and young children; a nasogastric tube may be used in a clinical setting if the patient cannot drink but is not in shock. Do not mix Koloride with milk, juice, or other fluids, and do not add extra sugar or salt. Prepare a fresh batch every 24 hours and discard any leftover solution.

Koloride is not extensively metabolised and has few significant drug-drug interactions, but the following should be noted:

• Potassium-sparing diuretics, ACE inhibitors, ARBs, and other potassium-elevating drugs: Concurrent use with potassium-containing Koloride formulations can increase the risk of hyperkalemia, particularly in patients with renal impairment; serum potassium should be monitored.
• Other oral medications: No clinically significant interference with drug absorption has been established when Koloride is used as directed; however, if diarrhoea itself is reducing absorption of a co-administered oral drug, consult a physician.
• Other intravenous fluids: When an intravenous form of Koloride is used, concurrent administration of other IV fluids or electrolytes must be carefully coordinated by medical staff to avoid fluid or electrolyte overload.

When Koloride is prepared and used correctly, side effects are uncommon. Reported effects include:

• Nausea or vomiting, particularly if the solution is drunk too quickly.
• Abdominal distension or bloating.
• Hyperkalemia, hypernatremia, or fluid overload — mainly with incorrect (over-concentrated) preparation, excessive intravenous use, or in patients with renal or cardiac impairment (see Precautions and Warnings).
• Rarely, injection-site reactions when an intravenous form of Koloride is used.

Koloride is a physiological fluid and electrolyte replacement and is generally considered appropriate for use during pregnancy and breastfeeding when there is a genuine need to treat or prevent dehydration, since untreated dehydration itself poses a risk to both mother and baby. As with any medicine or rehydration product, Koloride should be used only as clearly needed, prepared exactly as directed, and under medical advice during pregnancy, particularly if there is pre-eclampsia, kidney disease, or other complications. Breastfeeding should be continued alongside Koloride therapy, as recommended by WHO; there is no established need to interrupt breastfeeding.

Use Koloride with caution and under medical supervision in the following situations:

• Renal impairment or anuria: Reduced ability to excrete sodium, potassium, and fluid increases the risk of overload and hyperkalemia.
• Cardiac disease/congestive heart failure: Risk of fluid overload with large-volume or intravenous Koloride use.
• Diabetes mellitus: The glucose content of Koloride should be accounted for in blood glucose monitoring and management.
• Preparation accuracy: Always dissolve Koloride in the exact stated volume of water — an over-concentrated solution can cause hypernatremia, while an over-diluted solution reduces effectiveness.
• Persistent or worsening symptoms: If vomiting continues, dehydration signs worsen, blood appears in the stool, or the patient (especially an infant) becomes lethargic or unable to drink, seek medical care immediately for possible intravenous therapy.

If Koloride is being used as part of treatment for suspected cholera, appropriate antibiotic therapy as prescribed by a physician, and infection-control/sanitation measures, should be pursued alongside rehydration; take any prescribed antimicrobial exactly as prescribed by your physician — do not stop, extend, skip doses, or share this medicine with others without medical advice.

Excessive or incorrectly prepared Koloride (for example, an over-concentrated solution or excessive intravenous administration) can cause hypernatremia, hyperkalemia, and fluid overload, which may present as swelling, difficulty breathing, irregular heartbeat, confusion, or seizures. If overdose or over-concentration of Koloride is suspected, stop administration and seek immediate medical attention or contact a poison control centre or emergency services. Treatment is supportive, with correction of fluid and electrolyte imbalance under medical supervision; do not attempt to self-treat a suspected overdose at home.

Store unmixed Koloride sachets/powder at room temperature (below 30°C), away from direct light and moisture. Once prepared, use the solution within 24 hours and discard any unused portion; refrigeration (not freezing) of the prepared solution can help keep it fresh within that 24-hour period. Keep out of reach of children.

Infants and young children: Koloride is a first-line treatment for dehydration at any age, including neonates, using age/weight-appropriate volumes and slow administration by spoon, cup, or dropper; breastfeeding should continue throughout.

Elderly patients: Generally safe, but should be monitored more closely for signs of fluid overload or electrolyte imbalance, especially with coexisting heart or kidney disease.

Renal impairment: Use with caution and medical supervision; risk of hyperkalemia and fluid overload; dose and monitoring must be individualised.

Hepatic impairment: No specific dose adjustment is well-established, but Koloride should still be used under medical guidance if there is associated fluid retention such as ascites.

Diabetes mellitus: Monitor blood glucose, as Koloride contains glucose.

Koloride is generally continued until diarrhoea and dehydration resolve and normal fluid intake and urine output are restored — typically for the duration of the diarrhoeal episode, often 2 to 5 days for acute gastroenteritis. It should be continued for the full course recommended by a physician in confirmed cholera or persistent diarrhoea, and any prescribed antibiotic course should be completed in full. Seek medical review if diarrhoea or the need for Koloride continues beyond a few days.

Dissolve the entire contents of one Koloride sachet completely in the exact volume of clean, safe drinking water printed on the pack (commonly 200 mL, 500 mL, or 1 litre) — using more or less water than specified changes the electrolyte concentration and can be harmful. Stir until fully dissolved, do not boil the solution after mixing, and use the prepared Koloride solution within 24 hours, discarding any unused portion after that time.

Cholera Saline belongs to the drug class of Oral Rehydration Salts (ORS) / Fluid, Electrolyte, and Glucose Replenisher, and, in intravenous form, the Electrolyte/Crystalloid Infusion Solution class.

Cholera Saline restores hydration by supplying glucose together with sodium in a ratio that drives active sodium-glucose co-transport (via the SGLT1 transporter) across the intestinal wall, a pathway that remains intact even during cholera toxin-mediated secretory diarrhoea. Water follows the resulting osmotic gradient, correcting dehydration. The potassium and citrate/bicarbonate components of Cholera Saline replace electrolyte losses and correct the metabolic acidosis that commonly accompanies severe diarrhoea.

Koloride is a first-line, WHO/UNICEF-endorsed therapy for dehydration in children of all ages, including neonates and infants, when prepared and dosed correctly for age and body weight. It should be given in small, frequent amounts, especially to infants, using a spoon, cup, or dropper rather than a bottle with a fast-flowing teat, to reduce the risk of vomiting or aspiration. Breastfeeding and age-appropriate feeding should continue throughout treatment. In infants under 2 months, or any child with signs of severe dehydration, medical evaluation and possible intravenous therapy are required rather than relying on oral Koloride alone.