if my mother age 98 takes medication for low thyroid, high blood pressure,(Losartan) eyedrops for glaucoma, a water pill (hydrochlorit) as well as vitamin D (2000iu day) tums 4-6 a day , are lo dosages of anti-depressant/anxiety medications dangerous for her? for her age, with progressing dementia, is it too late to have her take medication like aricept or newer similar drugs