What can i do to find the name of this and How do I identify or find out what this very tiny round white pill is no markings only a line to show you where to split the pill?? I had it Given to me for shoulder pain but I don't want to take something that I don't know for sure what it is. it's very very tiny completely smooh on the back side and one evgraved line through the middle of the white round small pill to identify the middle of the pill