Tropicana High Premium orange juice

Hi

My son who is 4/12 has recently strated drinking Tropicana pure orange juice High Premium. My son is ASD and possibly ADHD (can't have diagnosis till he is five for ADHD)

My question is:

Since my son recently started drinking the above juice he seem very hyperactive and has been very restless at night, now i am not saying it is the juice but i highly suspect it is. Can someone please tell me if Tropicana pur orange juice is ok for hyperactive children, or should i be avoiding this drink ?

Your replies would be most appreciated