It's the least I can do after you've been helping me with everything I've needed.

[This included. He answers so easily, it's clear he has no trouble understanding, just like always, and he passes over one of the completed little vial things once it's full and closed.]

I'm sorry. It's probably exhausting for you. [Next, he waits until the rest are full to hand them over. Five total, for now.] About these... Let me know when you're down to two, and I can make some more.