Well it's been up and down with this kitty. A few days ago it looked like he was passing worm segments so I got some tapeworm dewormer and gave him a 1/2 tablet as he only weighs 3 lbs. This was on Wed. He has been having diarrhea for the last 2 days. Today was not as frequent as yesterday. He eats really well. Drinks plenty of water. Is getting stronger as he can now jump up in my chair with ease something he had difficulty doing before. He's even covering his "jobs" in the litter box including the diarrhea. He wasn't covering anything before. He seems to be doing really well. Should I be concerned? Or is the diarrhea a side effect of the dewormer?