I have received a round redish pill. LU on one side and V13 on the other. The MFG is LUPIN, and it was sent to replace IMIRAMINE HCL TABS 50mg. I have never received this generic before and have been taking green round ones for a long time... I went to Walgreens and they had no information on this drug... I called MEDCO, which is the ones that sent them to me and they said it was a generic of my Imipraime that I was taking. I check on line and also can not find this drug anywhere... Please advise if this drug is ok...