What Could Be Causing My Targin Pills To Pass Intact In My Stool, Causing Pain And Withdrawal Symptoms?

I have about 10 totally intact targin pills that have come out in my stool over the past week. I know I am not absorbing them, because I am in a lot of pain, and feel anxious, and like I’m in withdrawal. I’ve been on them since 2013 and have never had this problem before. The shells always come out empty. I’m on a parasite cleanse right now as well. What could be causing this? The drug company doesn’t even know. Please help.