The purpose of this study is to determine whether the probiotic Infloran is cost-effective in treating acute childhood diarrhea.

Probiotics have been proved to shorten duration of diarrhea in children; whether they are cost-effective is less clear. We'd like to validate the use of Infloran, a proprietary probiotic sold in Thailand, in terms of its cost-effectiveness compared to standard diarrhea care in our hospital setting.

Inclusion Criteria:

• Children 3 months to 6 years of age
• Hospitalized due to acute diarrhea

Exclusion Criteria:

• History of probiotic treatment in this episode of illness
• History of use of other anti-diarrheal medications
• Chronic gastrointestinal disease(s)
• Severe dehydration
• Severe systemic disease(s)