Senna is an FDA-approved nonprescription drug. 1  For constipation in adults and children age 12 and over: the usual dose is 17.2 mg daily. Don't take more than 34.4 mg per day.  For constipation in children: 8.5 mg daily increased just enough to cause one bowel movement daily has been used.
Report Abuse. Norovirus lives for WEEKS on surfaces. People are contagious for 2 weeks after all symptoms are gone. People should stay home for 48 hours after all symptoms are gone as well to help prevent the spread of this hightly contagious virus.eport Abuse. Norovirus lives for WEEKS on surfaces. People are contagious for 2 weeks after all symptoms are gone. People should stay home for 48 hours after all symptoms are gone as well to help prevent the spread of this hightly contagious virus.
Day care centers, nursing homes, cruise ships, and hospitalsâtheyâre all prime environments for Norovirus. This infectious, gastrointestinal illness can rip its way through close, crowded quarters like these, wreaking havoc on the residentsâ digestive systems, and leaving them dangerously dehydrated due to diarrhea, lack of appetite, and vomiting, within a mere 24 hour period.