Tizanidine
"My GP prescribed this for neck cramps from sitting in front a PC monitor so much.  Works great for that.  However, it also works wonders for my lower and mid back pains, aches and spasms.  I take 2 mg a couple times during the day and 4 mg about 30 minutes before bed.  If I am having really bad back pain, I'll take 4 mg 3-4 times during the day.  I do have some pretty vivid dreams, some bizarre, but few horrid dreams.  Overall this is wonderful medicine for my ailments!"