Is the keytruda itch all over your body? I am currently on a regime of Carboplatin, Taxol, and keytruda and had a very severe itch in my feet and hands. It has mostly resolved with a 100mg of Gabapentin taken 3x/day. I am hoping this is not a permanent state of being. I sit down and elevate my feet when they start to itch, if I was working it would be impossible.
The 1/2 life of Keytruda is 22 days, so at 22 days 1/2 of it is still circulating, at 44 days 1/4 would be left. I imagine with repeated infusions the numbers are a lot higher and it will take awhile to clear it out of your system.