muscle spasm
"I had a breast augmentation and was required to take 10mg 3x day for the first few days after surgery. Never felt any pain. On my bottle it warns of extreme drowsiness- don't know why this is such a shock to some. I ended up only taking 6 total and have some left over. It's been 3 years since my surgery but I'm so glad I have some on hand, as I threw out my shoulder. Yes, it will either knock you out, or keep you up. You'll feel hungover either way. But it does what it's supposed to do; if you're in enough pain, it's worth the relief."