Who said this person was only taking 50mg's? My point was that if he was trying to get high on tramadol, he was taking way more than 50mg's. Most people that are unaware of the risks tend to take 300mg's and higher, since at a normal dose(50-150mg's)there is very little euphoria, and the drug is almost completely safe. People that use it recreationally also tend to dose a second time before the first dose has taken full effect, since it takes a couple-three hours to reach a peak serum level. The combination of these two mistakes is where the risk of seizures would probably become more of an issue.