DEAR DR. ROACH: I am an 81-year-old man in reasonably good health. When I had trouble falling asleep, I would take a swig of Zzzquil, which worked perfectly every time.
However, since then, my cardiologist told me to stop taking such products, so I turned to 5-mg tablets of melatonin in the evening to help induce drowsiness. Sometimes it worked, and sometimes it didn’t.
One night, after I had three …