Well, report me and mine.
Back when zyrtec was prescription only, sometimes on really bad days, my hubby would take one of my daughter's zyrtec pills.
I hurt my back and had ultram for the first couple of day, and hubby took a left over ultram when he had a migraine. Knocked him out, he woke up great.
Hubby had knee surgery and only took 4 of his 12 lortab 5s. They're in the back of the closet, in case anyone turns an ankle (We're a very active and sporty, but very clumsy family).
When my brother suddenly announced that he and his wife were splitting up, and the next day my grandma got admitted to the hospital for sepsis (she had pneumonia and UTI), I ordered my mom to take one of my dad's xanax and go to bed. She had an appointment in two days to see her doc for depression, but she needed some sleep right then. She wasn't in danger... she just needed to calm down and sleep. She took, on my recommendation, a total of four xanax in the two days prior to that appointment. She shared that with her doc, as well as the fact that my dad usually just takes one or two a month, and the doc told her to just use my dad's supply unless she feels like she needs more than a total of 5 in a month; then she needs to call and get a script for her own. So I guess you better turn my mom's doc in, as well.
People need to understand that meds all have corresponding contraindications, side effects, and interactions. But really, people share meds all the time. Rather than freak out, it's best to educate people on their meds, what they do, why they're prescribed, and why it's best to typically not share them. Sharing does occur, however, all the time. No need to burst a vessel or wring your hands over it. Mainly, your friends probably needed to know that ambien and a muscle relaxant are two completely different medications, and the effect on your friend who forgot her ambien might not be the effect she was looking for!