Can Strattera effect your menstrol cycle?

My daughter began taking Strattera when she was 9 and puberty appeared to have already have started (hair growth etc). She is now just 14 and has been physically well developed for over 3 years, however her periods still have not started. I would suggest that this is related to her use of Strattera and believe that the medication must have delayed the onset of menstruation.

Possibly. Every medicine has side effects. Or it may just be hereditary. You decide.