Dioralyte Relief Oral Dehydration Therapy - Blackcurrant - 6 Sachets

What Are Oral Rehydration Sachets and How Do They Help?

When diarrhoea or vomiting strikes, your body loses far more than just water. It loses vital electrolytes — sodium, potassium, and chloride — that keep your cells functioning properly. That's where oral rehydration sachets come in. Dioralyte Relief Oral Rehydration Therapy in blackcurrant flavour is a clinically established way to replenish those lost fluids and salts quickly and safely. Each pack contains 6 sachets, making it a practical option to keep at home or take with you when travelling. You can browse our full range of diarrhoea treatments if you need additional support alongside rehydration therapy.

Dioralyte Relief is an over-the-counter medicine, meaning you don't need a prescription to buy it. It's been used widely across the UK for decades and is recommended by healthcare professionals as a first-line treatment for mild to moderate dehydration caused by acute diarrhoea. The blackcurrant flavour makes it more palatable — particularly useful when you're already feeling unwell and the last thing you want is a bland drink.

How Does Dioralyte Relief Work in the Body?

The science behind oral rehydration therapy is actually quite elegant. Rather than simply flooding the gut with water, Dioralyte Relief uses a glucose-sodium co-transport mechanism. Glucose molecules in the solution actively carry sodium ions across the intestinal wall and into the bloodstream — and water follows by osmosis. This process is significantly more efficient than drinking plain water, which can actually worsen electrolyte imbalance in some cases.

• Sodium chloride restores sodium levels lost through loose stools
• Potassium chloride replenishes potassium, which is critical for muscle and heart function
• Sodium citrate helps correct the mild acidosis that can accompany diarrhoea
• Rice powder (a key feature of the "Relief" formulation) helps to reduce stool output and frequency
• Glucose facilitates active absorption of sodium and water across the gut lining

The inclusion of rice powder is what distinguishes Dioralyte Relief from standard Dioralyte sachets. Clinical evidence suggests that rice-based oral rehydration solutions can reduce stool volume more effectively than glucose-based solutions alone, which may mean you feel better a little sooner.

Who Should Use Dioralyte Relief Blackcurrant Sachets?

Dioralyte Relief is suitable for a wide range of people experiencing dehydration due to diarrhoea or vomiting. It's particularly useful when symptoms are acute and you need to act quickly to prevent dehydration from worsening. That said, it's not appropriate for everyone — see the patient information section below for full contraindications.

• Adults and older children experiencing acute diarrhoea or vomiting
• People recovering from a stomach bug or gastroenteritis
• Travellers dealing with traveller's diarrhoea
• Individuals who need to maintain hydration during illness but struggle to keep fluids down

It is also commonly used alongside other supportive treatments. If you're managing broader digestive discomfort, our IBS and cramps collection may have additional products worth considering.

How Does Dioralyte Relief Compare to Standard Dioralyte?

Is Dioralyte Relief Suitable for Long-Term Use and How Should It Be Stored?

Dioralyte Relief is designed for short-term use during acute illness. It is not intended as a long-term supplement or daily drink. Once you've dissolved a sachet in 200ml of fresh drinking water, the solution should be used within one hour if kept at room temperature, or within 24 hours if refrigerated. Unused sachets should be stored below 25°C in a dry place, away from direct sunlight and out of reach of children.

If you're unsure whether oral rehydration sachets are right for your situation — for example, if you have kidney disease, are on a sodium-restricted diet, or are caring for a very young infant — always speak to a pharmacist or GP before use. You might also find it helpful to explore our sickness and nausea range for complementary products.

This product is a medicine. Speak to your doctor or pharmacist before using if you have an underlying medical condition or are taking other medicines.

What Is Dioralyte Relief and What Is It Used For?

Dioralyte Relief Oral Rehydration Therapy is a medically recognised treatment for dehydration caused by acute diarrhoea and vomiting. It comes in a blackcurrant-flavoured powder that you dissolve in water to create a drink that replaces the fluids, salts, and glucose your body loses when you're ill. The NHS recommends oral rehydration solutions as the first-line approach to managing dehydration in both adults and children, ahead of sports drinks or plain water, which don't contain the right balance of electrolytes.

Each sachet contains a carefully balanced combination of sodium chloride, potassium chloride, sodium citrate, glucose, and rice powder. The rice powder component is specific to the "Relief" formulation and is included to help reduce the volume and frequency of loose stools, offering a dual benefit during acute illness.

What Do You Need to Know Before Using Dioralyte Relief?

Before using Dioralyte Relief, it's important to check whether it's appropriate for you. Do not use this product if any of the following apply:

• You have kidney failure or severely impaired kidney function
• You have an intestinal obstruction or ileus
• You are on a strictly sodium-restricted diet without medical supervision
• You have been diagnosed with a condition causing high blood potassium (hyperkalaemia)
• You are allergic to any of the ingredients listed on the packaging

Use with caution and seek medical advice first if you are caring for an infant under 12 months, if you have diabetes (due to the glucose content), or if you have heart disease or liver disease. Always read the full patient information leaflet supplied with the product.

Regarding drug interactions, Dioralyte Relief has no clinically significant interactions at standard OTC doses. However, be aware of the following:

• High potassium intake may be relevant if you take potassium-sparing diuretics (e.g. spironolactone) — speak to your GP
• Sodium content may be relevant if you are on ACE inhibitors or ARBs for blood pressure — check with your pharmacist

How Should You Use Dioralyte Relief Sachets?

Using Dioralyte Relief correctly is straightforward, but it's worth following the steps carefully to ensure the solution is prepared safely and effectively.

1. Wash your hands thoroughly before handling the sachet
2. Open one sachet and pour the contents into a clean cup or glass
3. Add exactly 200ml of fresh drinking water (not hot water, as heat can degrade the ingredients)
4. Stir well until the powder is completely dissolved
5. Drink the solution slowly — sipping rather than gulping helps if you feel nauseous
6. Prepare a fresh solution for each dose; do not store mixed solution for more than 1 hour at room temperature (or 24 hours in the fridge)
7. Discard any unused solution after these time limits

If you're travelling and want to be prepared, our travel health collection includes a range of products to keep you well on the go.

What Are the Possible Side Effects of Dioralyte Relief?

Dioralyte Relief is generally very well tolerated. Side effects are uncommon, but it's worth knowing what to look out for.

Common side effects:

• Nausea — particularly if the solution is drunk too quickly
• Vomiting — again, usually related to drinking speed rather than the product itself

Less common side effects:

• Bloating or abdominal discomfort
• Hypernatraemia (raised blood sodium) if used in excess without adequate plain fluid intake — more relevant in very young children
• Allergic reactions (rare) — symptoms may include skin rash, itching, swelling of the face or throat, or difficulty breathing

If you experience any signs of a serious allergic reaction, stop using the product immediately and seek emergency medical attention. For mild nausea, try sipping the solution more slowly or chilling it in the fridge before drinking.

How Should You Store Dioralyte Relief Sachets?

Proper storage keeps the sachets effective right up to their expiry date. Follow these guidelines:

• Store unopened sachets below 25°C in a dry place
• Keep away from direct sunlight and moisture
• Store out of sight and reach of children
• Once dissolved in water, use within 1 hour at room temperature or within 24 hours if refrigerated
• Do not freeze the prepared solution
• Do not use after the expiry date printed on the packaging

If you're stocking up your home medicine cabinet, our first aid collection has everything you need to be prepared for common illnesses and minor emergencies.