I worked with an elderly lady who took her pills by color. When she was switched to generics she didn't know what to do/take when. It was terrifying to discover this. Who knows what she'd been taking and how.

The worst things I ever did were mess up when the number of pills changed like Scatterbrained did and so I took quite a bit more Seroquel than I was supposed to. My dr warned me that it changed when I went to XR and I forgot for 2 nights. I had call in sick for 2 days to sleep it off.
The other was getting up in the morning when I was on painkillers after surgery and taking my night meds rather than my morning meds, so I had 2400 mg of Seroquel in 12 hours. I had to call my pdoc who was out so I had to convince some random person I hadn't tried to OD with one days' meds and then I was out for the day. I think I pretty much slept for 36 hours from that. It was really scary. But I do know I can process 2400 mg of Seroquel .