Can a man ejaculate while sleeping after taking zolpidem?

Yes: Though many drugs (including zolpidem) may reduce libido, unless the does is quite high it won't suppress arousal or ejaculation entirely, especially in someone young and otherwise healthy.

Yes: A man might ejaculate during sleep with or without taking zolpidem.

Yes: Nocturnal ejaculations are normal with or without zolpidem. Have a healthy diet, exercise, drink plenty of water, have safe sex, if you do, and get HPV vaccine, if you are younger than 45-years. Wish you good health!