I have heard before that you may need to vary the injection site--otherwise it may stop being absorbed after a while.
Zelma
I had one comment on the injections, although I've never had them on a routine basis. I'm allergic to so many medications. I'm afraid that if I had an injection of something like this that I'd have an allergic reaction and couldn't get it out of my system fast enough.
At least, with pills, I can stop taking them and they usually get out within a few days or so.
Just something else to consider...