Hello again: I was wandering if anybody has had a low Vitamin D...

Hello again: I was wandering if anybody has had a low Vitamin D deficiency with the use of Doxycycline? I found out yesterday I do have a deficiency it went down to 11 it should be I think between 30-100. I start 50,000iu tomorrow to get it back up! I read that Vitamin D deficiency can cause a lot of these symptoms that are on this site. Hope Vitamin D works for me! Also I am still looking for help! after two months of being off Doxycycline! what has everyone done to get better? Question? has anyone had permanent side effects?