How do you counsel older adults regarding the use of melatonin (dose and timing) for sleep-related problems?  

Melatonin has a weak hypnotic (i.e., sleep-inducing) effect. It helps people to fall asleep but not to stay asleep. It is not effective in people with chronic insomnia, but it is perfectly safe in low doses (i.e., below 10 mg) and can be helpful for occasional problems with falling asleep. For sleep...