"My 13-year-old daughter takes Adderall, and it seems to affect her menstrual cycle."
Larry Silver, M.D.
I reviewed the published literature on side effects of Ritalin, Dexedrine, and Adderall and could find no listing suggesting an impact on menstrual cycles.
However, if you have found a direct relationship between your daughter taking her medication and her not having her period, I would suggest that you try a different medication. If the stimulant medications cause this difficulty, speak to your family doctor about using one of the tricyclic antidepressants.