Help! I've been taught that Dilantin was only to be administered with Normal Saline. I've seen cloudy tubing with it was mixed with concurrent fluids of D5LR, D5NS etc. In fact I believe drug precipate from mixing these drugs caused port occlusion a few years ago. To prove my point, I tried injecting Dilantin in a line primed with D5W and guess what..nothing happened. Have I been misled? The books say precipate may occur. Taking a chance on losing a port is not worth it in my opinion.