Most over-the-counter sleeping pills are antihistamines, such as diphenhydramine (Nytol, Sominex) and doxylamine (Unisom, Nighttime Sleep Aid). Many prescription sleeping pills are benzodiazepines like estazolam (ProSam) and flurazepam. Other prescription sleeping pills include sedative hypnotic medications like zolpidem (Ambien) and eszopiclone (Lunesta).
