For six hours following drug administration, subjects will rate the severity of specific symptoms. At the end of the six hour study, subjects will rate the overall effectiveness of the product.

A six-hour study to evaluate multiple early efficacy endpoints in loperamide-simethicone therapy to help identify speed of onset of symptomatic treatment of acute nonspecific diarrhea (ANSD).

Inclusion Criteria:

• Diagnosis of acute diarrhea with gas-related abdominal discomfort, meeting specific criteria
• Willing to follow the protocol requirements and comply with protocol restrictions, including use of contraception
• Able to understand the informed consent process and sign the form
• Cooperative, reliable and willing to comply with the protocol requirements and schedule, and able to record efficacy and safety assessments.

Exclusion Criteria:

• Female subjects who are pregnant, lactating or experiencing perimenstrual abdominal or pelvic discomfort
• Illness requires hospitalization, IV fluids or antibiotics
• Has taken antibiotics in the past 7 days or a symptomatic antidiarrheal compound in the past 12 hours or any analgesic in the past 6 hours
• History of significant underlying enteric, pulmonary, hepatic, cardiac, renal disease, seizure disorder, IBD, cancer, uncontrolled diabetes, or any other unstable medical condition
• History of hypersensitivity to loperamide or simethicone
• Has previously participated in this study or received an investigational drug within the 30 day period before screening