t have an answer, but can only say that I to believe that the
tacrolimus eye drops gave mu beautiful shih Tzu
cancer of the lymph nodes, mast cell
cancer. We gave these drops to our little dog faithfully for 4 years until the day we put him to sleep 2 months ago. About a year and one half into the medication Ryker developed cancer, I asked the eye vet specialist who had prescribed the drops if they might have caused it as I then did some research and found out that it did cause cancer in humans.