Teamsters will help you out, not only with treatment but keeping your job. The company now knows you have or had a drug problem, so you never know what kind of BS they might try and pull in the future just to can you. Stay close with your shop steward.
Whether people agree or not, addiction is a disease and should be treated as such. I’ve lost close friends and a relative to opioids. They weren’t stereotypical junkies, just working class people who got hooked after being prescribed painkillers and it ended up spiraling out of control. I regret passing judgement on them when I had no clue what they were going through.
Anyway, take care.