Q & A

How is OS-1 different from sport drinks?

OS-1 oral rehydration solution contains higher levels of electrolytes than most sports drinks and a lower concentration of carbohydrates than sports drinks in order to speed absorption of water and electrolytes. This enables OS-1 to replenish electrolytes (sodium and other salts which are lacking when a person is dehydrated), as advocated for oral hydration therapy.

Electrolyte compositions of oral rehydration solutions, etc.

Sodium (mEq/L) Potassium (mEq/L) Chloride (mEq/L) Carbohydrate (glucose) (%)
OS-1 Jelly
50 20 50 2.5(1.8)
Sports drinks* 9 to 23 3 to 5 5 to 18 6 to 10
WHO oral rehydration solution# 75 20 65 1.35
Oral rehydration guidelines of the American Academy of Pediatrics (maintenance fluid)## 40 to 60 20 2.0 to 2.5
* Kiyoko Yamaguchi: THE JOURNAL OF PEDIATRIC PRACTICE, 1994;57(4):788-792
# World Health Organization http://www.who.int/maternal_child_adolescent/documents/fch_cah_06_1/en/
(as of August 2019)
## AMERICAN ACADEMY OF PEDIATRICS Committee on Nutrition: PEDIATRICS 1985;75(2):358-361

Sports drinks are sufficient for replenishment of water and electrolytes after everyday activities. However, OS-1 oral rehydration solution is appropriate for mild to moderate dehydration in circumstances such as the following.

  • Dehydration associated with diarrhea, vomiting, or fever due to infectious enteritis or the common cold
  • Dehydration due to inadequate oral intake in the elderly
  • Dehydration due to excessive perspiration
  • OS-1 Jelly should be used by people with trouble chewing or swallowing