I'm totally shock..about this....my 10 year old daughter is been ...

I'm totally shock..about this....my 10 year old daughter is been on singular for the past 2 years, and she struggles in the school with concentration issues, sinus infections ,cramps in her legs, nose bleeds..and after reading this I can not believe that I 'm intoxicating my child because the pediatrician never told me about those side effects.....I can't believe this medication is in the market with safe issues....So what is the real meaning of safety for the doctors in our days.....scary!!!