It would not seem feasible that he's been poisoned by bpa. He might have been exposed to minute amounts, but there's a big difference between that and "poisoning".
I believe that they found that BPA is only a small amount of the bottles hence the reason they haven't been recalled. What does your Ped say?
What do you mean "hyperactive"? Many children are hyperactive? Some have ADHD and are actually diagnosed with it, and other children are just normal children with a ton of energy.
He's more likely to be affected by t.v. watching than by bottles.
Check the latest reports on BPA at Consumer Affairs and find out the truth about BPA, they have no axe to grind.
BPA I did not hear causes that, I know it can cuse other things but it has been taken off the market. Not eating a balanced diet, watching TV and eating lots of juices and sweets is more reason to be hyperactive then BPA! Also not having a good routine of eating at a table and going to bed at a good time is a casue of being hyperactive. I do not think you will get anywhere with a ped or natural dr on that issue. My family sees a homeophathic dr and we go all natural. Refined sugars and bleached flours and diet is the main casue of ADHD and hyperactive in children. I would look into that for him! Best of luck