He wont get DWI conviction it doesnt show up in your system. Tell him stop driving on it he will kill someone. Its nuts but if he gets a good attorney hell beat all the DWI cases. The drug does not SHOW up on urine or blood.
He needs to get off of it. I had some terrible times on it. Pretty much got hooked. I wish him the best of luck. Once you are off it for a month, he should be ok. I was another person on it. Great stuff but terrible consequences