Can you mix suboxone with baclofen?

my son has end stage kidney failure and he was prescribed methadone and baclofen. after taking 4 doses of baclofen he stated having seizures and muscle spacicisity. He is still in the hospital with possible brain damage. There is another case in New York state where a man sued and won $800,000.00 from a bad reaction to the same thing of off label use. Be careful.