insomnia
"I am in my seventies and have taken zolpidem for about 3 years. I split 10 mg pills into thirds. I take one at sleep time, another when I wake up, take another if it is still early in morning when I wake up again. Sometimes I take 4 in a night. So I take from 2 to 4 each night, which works well. Using the split pills gives me control on dosage, versus CR. I am really glad to have it."