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Should I pack oral rehydration salts for backcountry adventures?

April 5, 2026

Quick Answer

You should pack oral rehydration salts for backcountry adventures as a precaution to prevent dehydration in case of diarrhea or vomiting.

Why Oral Rehydration Salts Matter

Oral rehydration salts (ORS) contain essential electrolytes such as sodium, potassium, and chloride, which are lost in large quantities during diarrhea and vomiting. These salts help replenish fluids and electrolytes, reducing the risk of dehydration, a potentially life-threatening condition in remote areas. A single packet of ORS usually contains 75 mmol of sodium, which is enough to replenish sodium stores in a person who has lost about 2-3 liters of fluid.

Choosing the Right ORS

Look for ORS packets that contain 75 mmol of sodium per packet and 20-50 mmol of potassium. Some popular brands include Pedialyte, ORS, and Gatorade G2. When choosing an ORS, consider the duration and intensity of your backcountry adventure. For longer trips or high-exertion activities, consider packing multiple packets of ORS or a more concentrated solution.

Administering ORS Effectively

To administer ORS effectively, mix the contents of one packet with 1 liter of clean water. Stir the mixture well and have the person drink 1/2 to 1 liter of the solution within 30 minutes, followed by small sips of water every 10-15 minutes to replenish lost fluids. Monitor the person’s urine output and color to ensure they are rehydrating properly – dark yellow or amber-colored urine indicates inadequate hydration.

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