Tizanidine
"I take 8 mg a day.  2 mg morning and noon and 4 mg in the evening. Effective in spasm relieve and perfect for the night, before  that I was constantly tired, but unable to rest at night of discomfort  and  pain in the neck. Now I am alive during the day with some exceptions, an hour after I take 2 mg pill I feel sleepy if I am relaxed. But if I am outside or active sleepiness goes away. That is not applied for 4 mg, after this does I am out."