Catheter lubricant is important for those that use uncoated intermittent catheters. The catheter lubricant is used to help reduce the pain or discomfort during personal catheter insertion and removal. It's best to use a sterile and water-soluble lubricant to lessen the chances of infection and make the catheterization experience more comfortable. Catheter lubricant can make all the difference when inserting and removing personal catheters.