Quanzhan,
Thank you for reminding us. And I am so glad that Zack is handling this treatment better. Can't wait until you tell us that he is "free" of heartworms and ready to romp!!! (or countersurf for some more doughnuts)!!
Pepper, I hope the treatment will go well....don't be surprised if he's feeling pretty lousy for a while. You are an angel to be helping him out. I'm sure he'll repay your kindness over and over throughout his life.

Logan