I am addicted to tramadol for 10 years and now i take +- 1000mg daily. It Is definitely acting like an opioid with strong effects in this dose. And Its much longer half-life and SNRi properties make tramadol kind of special, great for physical activity and avoiding sleep. And it Is amazing antidepressant, better than those which i was or which i am prescribed.
Seizures are real and very possible to happen in doses above 300mg. I succesfully avoid them by taking LEVETIRACETAM And alprazolam, sometimes diazepam. Tramadol with xanax and modafinil together is wonderful combo, long lasting, relaxed yet still functional high.