pentobarbital will lower the level or effect of linagliptin by impacting hepatic/intestinal enzyme CYP3A4 metabolism. Use Caution/Observe. Use of other remedies is strongly advisable when linagliptin should be to be administered with a CYP3A4 inducerpentobarbital will decrease the extent or outcome of erlotinib by influencing hepatic/intestinal enz