Xiidra
"I took advantage of their promotion offering the first prescription free.  However, since Medicare doesn't cover this medication, subsequent refills will cost me $450 a month.  This is a very expensive medication that I simply can't afford, and will likely have to do without.  Consumer tip.  Medication comes in single dose containers, and instructions suggest you discard them.  But if you're careful, you can actually get two doses from each container."