I have been having trouble sleeping because of significant pain in my neck and shoulders. I have been trying to limit the analgesics to NSAID s, per my doctor s recommendations, but following two virtually sleepless nights, I added 25 mg of Tramadol from a previous prescription, then, about 90 minutes later, took a 10 mg Zolpidem tablet that my wife offered me. Is there any potentially dangerous interaction in this mix? I have no other health problems. Stan