I have been having leg cramping and pain for several weeks now. I'm taking modic and amitripline which helps some. My Dr. has run blood tests and they show nothing abnormal. The pain can be so sever it hurts to walk my legs fall asleep and and go numb. I also have my knees and ankles buckle causing me to lose my balance. It has not stopped me from working but has slowed me down a lot. If I have a good day and walk a lot I pay for it that night and the next day. I work all day standing, on a concrete floor. I have good shoes and stand on a pad.