Oral Rehydration Salts: When Water Alone Isn't Enough

Dehydration is a common and potentially serious health problem in Cambodia, particularly during episodes of diarrhea, vomiting, fever, or excessive sweating caused by the country’s hot tropical climate.

While drinking water is essential, water alone cannot replace the important salts and minerals lost from the body. Oral Rehydration Salts (ORS) are specifically designed to restore both fluids and electrolytes, making them one of the most effective treatments for mild to moderate dehydration.

Knowing when and how to use ORS correctly can help prevent complications and reduce the risk of hospitalization, especially for young children and older adults.

What Are Oral Rehydration Salts (ORS)?

Oral Rehydration Salts (ORS) are a carefully balanced mixture of:

• Glucose (sugar)
• Sodium
• Potassium
• Chloride
• Citrate or bicarbonate

When mixed with clean water, ORS helps the body absorb water more efficiently through the intestines, replacing both fluids and essential electrolytes lost during illness.

ORS is recommended by international health organizations as the first-line treatment for dehydration caused by diarrhea.

Why Water Alone Is Not Enough

Many people believe drinking plain water is sufficient during diarrhea or vomiting.

However, illness causes the body to lose:

• Water
• Sodium
• Potassium
• Chloride

Replacing only water may not fully correct dehydration or electrolyte imbalance.

ORS restores both fluids and the minerals needed for normal muscle, nerve, and heart function.

When Should You Use ORS?

ORS is recommended when someone develops:

• Acute diarrhea
• Vomiting
• Fever with dehydration
• Heat exhaustion with fluid loss
• Mild to moderate dehydration

Children under 5 years old, older adults, and people with chronic illnesses are particularly vulnerable to dehydration and may benefit from early ORS use.

Signs of Dehydration

Watch for symptoms such as:

Mild to Moderate Dehydration

• Dry mouth
• Increased thirst
• Reduced urination
• Dark yellow urine
• Fatigue
• Dizziness

• Sunken eyes in children

   

Severe Dehydration (Medical Emergency)

• Very little or no urine
• Extreme sleepiness
• Confusion
• Rapid heartbeat
• Cold hands and feet
• Difficulty waking
• Loss of consciousness

Severe dehydration requires immediate medical treatment.

How to Prepare ORS Correctly

Always follow the instructions on the ORS packet.

General guidelines include:

1. Wash your hands.
2. Use clean, safe drinking water.
3. Mix the entire ORS packet with the exact amount of water specified on the package.
4. Stir until completely dissolved.
5. Do not add sugar, milk, juice, or soft drinks.

Incorrect mixing may make ORS less effective or even unsafe.

How to Give ORS

Take small, frequent sips rather than drinking large amounts quickly.

For children:

• Offer a spoonful every 1–2 minutes if they are vomiting.
• Continue breastfeeding during diarrhea.
• Resume normal feeding as soon as possible.

For adults:

Drink ORS gradually throughout the day while continuing to eat light meals if tolerated.

How Long Can Prepared ORS Be Used?

Prepared ORS should generally be used within:

• 24 hours if kept covered and stored safely.

Discard any leftover solution after 24 hours and prepare a fresh batch if needed.

Foods to Eat During Recovery

Once vomiting improves, choose easy-to-digest foods such as:

• Rice
• Porridge
• Bananas
• Soup
• Boiled vegetables
• Lean chicken
• Fish

Avoid:

• Alcohol
• Sugary soft drinks
• Very oily foods
• Highly spicy meals until recovery

When Should You See a Doctor?

Seek medical care immediately if the patient has:

• Severe dehydration
• Blood in the stool
• Persistent vomiting
• High fever
• Diarrhea lasting more than two to three days
• Severe abdominal pain
• Signs of shock
• Difficulty drinking fluids
• A child younger than six months with diarrhea
• An older adult with worsening weakness or confusion

Early treatment can prevent serious complications.

Preventing Dehydration

Reduce your risk by:

• Drinking safe, clean water daily
• Washing hands regularly
• Preparing food safely
• Keeping childhood vaccinations up to date
• Seeking medical advice early for persistent diarrhea
• Keeping ORS packets available in your home first-aid kit

Key Takeaway

Oral Rehydration Salts (ORS) are a simple, affordable, and lifesaving treatment for dehydration caused by diarrhea, vomiting, fever, and excessive fluid loss. While water is important, ORS replaces both fluids and essential electrolytes that the body needs to recover. Early use of ORS, combined with timely medical care when warning signs appear, can help prevent serious complications in both children and adults.