My son suffered a TBI in August 2011. Two months later he started having seizures. He's been on Hydrocodene, Percocets, Xanax, Dillantin, K-pro buspar and numerous other drugs. Currently he is taking Hydrocodene, Buspar, and K-pro. He cannot take aspirin or nsaids. The side effects are causing more problems than good. What other medication can be used together without the side effects. Valium has help more than the Xanax with the K-pro and the low dosage of hyrocodene hasn't caused the seizures.