Lorazepam

Lorazepam is a prescription medication used to treat anxiety and insomnia. According to the autopsy report, Alexandra Kranf ingested lorazepam "some hours" before her death, weakening her and contributing to her death.

Ross Moebus
It came out in trial that Ross Moebus had been taking lorazepam. Defense theorized that Ross may have given the lorazepam to Jackie Riemowski when he was handling her lunch arrangements earlier that day. Examination of his bottle, which he usually keeps with him, shows that it had his fingerprints on it, and his bottle had slightly fewer pills than expected, but this can be explained by him raising the dose.