"Our doctor wants to take my daughter off Ritalin, even though it helps her. I get the impression that he doesn't believe ADD is a real condition."
Larry Silver, M.D.
ADHD is a chronic disorder that needs to be treated on an ongoing basis. The fact that your daughter responded so dramatically to the medication is all the more reason for her to remain on this dose. I agree that your physician might not understand ADHD. You might encourage him or her to read a book on this topic (for example, Dr. Larry Silver's Advice to Parents on ADHD).
If this physician insists on stopping the medication, seek another physician. Don't let your daughter suffer because of this physician's misinformation.