Hi buddybelle,
I agree! I"ve learned a lot from this thread, too.
I'm sorry that I don't know about Plaquenil having an effect on white blood counts. Hopefully, someone else will have that info. for you.
I had heard a few people say they either lost a bit of weight or gained, so that could be a very individualized thing (like everything else with us).

I've been taking the drug since the end of April and not had any difference in my weight.
It's very possible that starting the Plaquenil has helped your constipation issues. I have noticed this benefit, too, and it's a beautiful thing! So I can understand your excitement. Of course, for some, it may give them diarrhea but in our cases, it's just balancing things out.
Have you seen any other benefits as of yet? 4 weeks is not a long time, so if not, I'd suggest that you be patient. I suppose your question about blood counts would be a good question to ask at your check-up.
Take care, and keep us updated.
Melinda