Irony: When poison makes you feel better

Today has been a good day for Fez. He has been more active and has his appetite back. He received his chemotherapy dose on Monday and for the next few days was under the weather. Today I am happy to report he was asking for food and to play with his laser. It appears that the chemo is at least helping him feel better! While I understand the science, it still seems odd that giving poison makes him feel better.