So...early this morning, I was going to take some over-the-counter cough medication. I grabbed a bottle, thinking it was the OTC medication, but instead, it was the Codeine cough syrup kind (Guaifenesin 100mg/Codeine 10mg per 5ml), and I took 20ml, a double dose. As soon as I realized my mistake, I contacted 911, who also conferenced in Poison Control. I was given three options.

1.) Stay at home and have my roommate observe me for 4 hours
2.) Take an Uber/Lyft with my roommate (who does not have a vehicle that she can drive), and have her observe me to the ER, and have the ER observe me.
3.) Take an Ambulance and have the ER observe me.

I went for the least inconvenient and cheaper option, number 2. Poison Control contacted the hospital ahead of me, and I got checked into the ER. I was whisked to the back area for observation and they made sure I was ok. Two and a half hours later after I contacted 911, I was discharged.

How did I mix up the OTC bottle and the Prescription opioid bottle of cough syrup?
I was tired, the bottles look similar enough, even with the prescription label on one. Both had white labeling. The only difference was the OTC bottle (Which was Dextromethorphan Guaifenesin, often called the "DM" variant of OTC Cough medication) is a bit taller and bigger than the Opioid bottle. But when you're tired, you do not always notice this. The primary color of both labels is white, which if one was a different color, it may have helped with identifying which one is which.

What is my plan to avoid this in the future?
I have a 2-fold plan. First is relocating that prescription bottle to a different part of my medicine cabinet, to an area that I do not frequently go to, so I don't grab it again.

Second, I'm planning on having a box of Narcan (Naloxone) available in case of a household emergency like this again. My roommate is also about to have surgery, and she will be on opioid painkillers, and I'd feel better with the box of Narcan with me.