Versed and Fentanyl. Versed is often combined with Fentanyl, a powerful pain reliever, to provide “conscious sedation.. It is also known as “twilight sleep” or “monitored anesthesia care (MAC)”. The two drugs, working together, provide pain relief, relaxation, and amnesia. The purpose is to prevent pain and anxiety during the procedure, and if there is any discomfort or stress, the patient is not likely to remember it.