Last night I woke up in the middle of the night with a headache and back pain that I've been having recently. I blindly took 2 muscle relaxants when I was supposed to only take 1! I didn't realize this until morning.. about 7 hours later! 800mg of ibuprofen and 1000mg of methocarbamol. Kinda scary but I went to sleep just fine, but feeling a little off today. Anyone else out there ever do this?