Read the following directions on a bottle of medicine:     "Take two tablets with water, followed by one tablet every eight hours, as required, For maximum night-time and early morning relief, take two tablets at bed - time, Do not take more than six tablets in twenty-four hours.      For children six to twelve years old, give half the amount for a grownup. For children under six years old, ask for your doctor's advice.     Reduce the amount if nervousness,  _ , or sleeplessness occurs," We can infer from the directions that   _  .
the medicine could cause some people to feel nervous. children may take the same amount that grown-ups take. one may not take this medicine before going to bed. the medicine is a liquid.