I've just heard the same thing from my new rheumy. My vitamin D level was 46 back in July, which is ok. She just got the reports from my Texas rheumy, and my bloodwork on Aug. 24 (just before we left Texas) shows that the vitamin D level plummeted to 29.
The doc thinks that my theory is right. All through June and July, I was taking my grandson to swim team practice every morning. I was sitting in indirect sunlight, reading, for an hour each morning while he swam. That's what kept the vitamin D levels in the safe zone. Like you, I also take a daily D 3.
Now that I'm rarely out in the sun, those levels dropped. She gave me a prescription for a mega-dose of D. I have to take a capsule once per week that is 50,000 units of D! She also told me to continue my daily dose and to get out in the sun with NO sunscreen for 15 minutes per day. She suggested beach walking.
Lucky for me, the sun doesn't make me as sick as it does some of the others on this board. I'm really wondering whether the meds that we take are also leaching the vitamin D?
I take MTX and Plaquenil. How about you?
I think that you should call your doc and see if you can get the mega-dose capsules that I have. I know that it is probably chilly in North Texas right now, but see if you can get out and walk on sunny days, too.
I took my first capsule today, so I'll let you know how it goes for me. I'll get my next bloodwork done in January and then see the rheumy again in February. (We have to go to Arkansas at the end of Dec. to meet our new grandson!)