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.
Norovirus, also known as winter vomiting disease, causes gastroenteritis and is highly infectious. The virus is easily transmitted through contact with infected individuals from one person to another. Outbreaks are common in semi-enclosed environments such as hospitals, nursing homes, schools and cruise ships and can also occur in restaurants and hotels. The virus is usually mild and lasts for 1 to 2 days. Symptoms include vomiting, projectile vomiting, diarhorrea and fever.