If VALIUM is combined with opioids like hydrocodone, codeine, and tramadol, doctors should be immediately consulted by the patient. Taking antidepressants along with Valium 10mg like amitriptyline, nortriptyline, doxepin, mirtazapine, trazodone may cause drowsiness or sleepiness or may lead to slow down of breathing. What is Diazepam (Valium), and how does it help you?