This is just an update to my previous entry. I took allergy drops for about two months last spring, and got increasingly worse muscle and joint pain the longer I was on them. My primary care doctor said to stop them, as he suspected they were messing with my immune system. I stopped in the middle of June, and very slowly the pain went away. But it took about three months for it to almost all go away. Now, in the middle of October, I have no more joint aches, and the muscle pain is almost completely gone. So there is hope! Thanks to everyone for their input on this topic. I was not warned at all this might happen by my allergist, though when I saw him two weeks ago he agreed the drops could definitely be the cause. I so wish he had told me to watch out for this! -Jan