Questions about medication should be asked to a pharmacist or a doctor, and not on-line, where the information you'll get could be inaccurate, incomplete, or plain wrong. That being said:
Both Zolpidem and Lortab contain controlled substances and must NOT be used without the direction of a physician. There are important interactions between them and should be administered and monitored very carefully. A doctor may decide this is the best course of treatment available, but feel free to ask him about whatever side effects and risks that concern you.