My Husband Has Just Been Admitted To A Rehab Center

My husband has just been admitted to a rehab center and one of he prn meds is seoquel 25 mg. I've heard a lot of unfavorable comments about it?? He would probably get it at bedtime ofor restlessness? What do you think about this drug....been a nurse since ' 68 and I hate meds...know they are sometimes an necessary evil, but personally I think a lot of meds are prescribed that aren't needed!? BTW he's 90 yo