I came across two white pills and they said cor 138 on the front and I looked it up and found it was Tizanidine. I have read about it on wikipedia, there is nothing on erowid about it. I'm still unclear as to what it treats. So, Totse, can I have fun or be relaxed with these pills?

Although it looks like it's described as almost somewhat of a muscle relaxer, a general rule of thumb is, "If erowid doesn't have a page on it, it's probably not going to be recreational." I think that applies to this situation as well.