What Should I Do If My 17 Yr Old Drank

What should i do if my 17 yr old drank 6 beers after taking first dose of seraquel. Her doctor started her on meds because she became psychotic and is hearing voices. She had been experimenting with drugs for about a year and then didn' t use for 9 months. However, in the past three months, started hearing things. She was diagnosed with PTSD ADD. depression and anxiety about two years ago before the psychosis.