You might want to inquire about having a full sleep study to rule out sleep apnea and/or narcolepsy. The sleep paralysis, hallucinations, and daytime sleepiness are hallmarks of narcolepsy. Narcolepsy isn't just suddenly collapsing in a state of sleep. I tell you this not as a medical professional, but as a person with narcolepsy. Best wishes.
Your doctor is the best person to answer this, based on your med history and a physical exam. If you have no unaddressed underlying med issues, you can improve your overall sleep using a CBT sleep training system. It is a substance-free, permanent solution for most who use it.