Is Methacarbomal Safe And Effective In Relieving Neck And Knee Pain?

I work at a desk reading prints all day then am active in the yard or garden and may have a cold beer at this time. I quit taking mucle relaxants because while working at my print table i become extremly sleepy. Maloxicam isn't helping with my neck and knee pain any l;onger (after about 2 years). Do you think methacarbomal will help?