Q & A

How is OS-1 different from sport drinks?

Oral Rehydration Solution OS-1 is used in dietary therapy (oral rehydration therapy) for dehydration.

It contains more electrolytes than sports drink and less sugar to facilitate absorption of water and electrolytes.

Electrolyte compositions of oral rehydration solutions, etc.

Component Sodium (mEq/L) Potassium (mEq/L) Chloride (mEq/L) Carbohydrate (glucose) (%) Citrate
Osmotic pressure
WHO-ORS (2002) 75 20 65 1.35 10 245
ESPGHAN 60 20 60 1.6 10 240
Guidelines of Oral Rehydration Therapy (Maintenance Fluid) of the American Academy of Pediatrics 40 to 60 20 2.0 to 2.5
OS-1 (OS-1 Jelly) 50 20 50 2.5【1.8】 15*(16.2*) 260
Sports drinks 9 to 23 3 to 5 5 to 18 6 to 10
Mineral water 0.04 to 4.04 0.04 to 4.04
※World Health Organization https://www.who.int/maternal_child_adolescent/documents/fch_cah_06_1/en/ (as of March 2021)
※※ European Society for Paediatric Gastroenterology, Hepatology and Nutrition: J. Pediatr. Gastroenterol. Nutr.,2001; 33 Suppl. 2:S36-39
※※※ AMERICAN ACADEMY OF PEDIATRICS Committee on Nutrition : PEDIATRICS 1985;75(2):358-361
# Kiyoko Yamaguchi: THE JOURNAL OF PEDIATRIC PRACTICE, 1994;57(4):788-792 ## Rie Yanai, et al. Kawasaki Medical Welfare Society, 2003; 13(1): 103-109
⁂20-30% base (acetic acid, lactic acid, citric acid, bicarbonate) as negative ions; the remainder, chloride *Total amount of citrate and citric acid

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
  • Heatstroke associated with dehydration
  • OS-1 Jelly can be used by people with trouble chewing or swallowing