***TASK*** the task is to summarize an input biomedical literature in six sentences 
    ***INPUT*** the input is a biomedical literature 
    ***OUTPUT*** the output is the summary of an input biomedical literature in six sentences 
    ***DOCUMENTATION*** 
    ***EXAMPLES*** 
    Input: Abstract Forty-two subjects who had symptoms of nausea or vomiting , when exposed to the motion of rough seas , were given an intramuscular injection of either l -hyoscine hydrobromide ( 0·2 mg . ) or physiological saline solution . Nineteen of the twenty-two subjects  given hyoscine  reported symptomatic improvement as opposed to nine of the twenty who received the placebo ; this difference is significant at the 5 % level . Side-effects were not severe : there was an equal incidence of drowsiness in both groups but dry mouth was more common after hyoscine . The dose given controlled symptoms within 15 to 30 minutes of administration and a dose of this size might be expected to afford protection for about 4 hours . An injection of this nature could therefore be of value for the rapid control of symptoms in conditions where treatment by mouth is not practicable 
    Output:
    
Scopolamine was more effective than placebo in the prevention of symptoms .
Comparisons between scopolamine and other agents were few and suggested that scopolamine was superior ( versus methscopolamine ) or equivalent ( versus antihistamines ) as a preventative agent .
Although sample sizes were small , scopolamine was no more likely to induce drowsiness , blurring of vision or dizziness compared to other agents .
Dry mouth was more likely with scopolamine than with methscopolamine or cinnarizine .
AUTHORS ' CONCLUSIONS The use of scopolamine versus placebo in preventing motion sickness has been shown to be effective .