... born (8 mos. gestation). This was in 1992.While I was taking the drug, I experienced trouble calculating simple math problems and also comprehending what I was reading. I had always been good at math and was an avid reader since I learned how in grade school. After all these years I have never fully regained my former levels of ability and now they seem to be getting worse at a rate that exceeds what you would expect with normal aging (I'm now 53). Also, my son has always been ADHD and has been described by doctors as being in the 99 percentile. My son's life skills are seriously compromised by this disorder. Has anyone else had similar problems?