Atavan and Methadone: Former cancer patient is having memory loss...? My mom takes both of these for the bone pain that she has from suffering Breast Cancer 3 years ago. It has literally made her a completely different person. She tells the same stories 3-4 times a day, forgets where she puts everything, and is unbearable to be around because she just acts so strange...she is addicted to these drugs and freaks out when her prescription needs to be filled about 2 weeks in advance and makes me take off of work just to make sure that I drive her to the hospital to pick them up and they get in her hands. She has panic attacks during that time...and she babysits my 2 year old almost every day. I am getting to the point to where I don't feel comfortable with her watching my daughter anymore. Does anyone know what the long term effects of these meds are, and should I be this concerned?

Summarized question: What is the long-term effect of Atavan and Methadone on memory loss?