Mefoxin and IV filters

We use Braun pumps and filtered tubing at our facility. We hang a lot of Mefoxin, but it keeps plugging up our filters requiring a tubing change during the infusion. This results in a loss part of that dose. Because the antibiotic is piggybacked, the primary line has the filter. There is concern that if we eliminate the filter, other issues will arise that the filter is made to prevent (air, etc.). We are changing tubing at least 1-2 times in 24hours on patients on Mefoxin, each time losing a part of that dose. Anyone else having these kind of problems or have a good solution (our pharmacy just shrugs their shoulders).