What were you on it for? It doesn't prevent withdrawal symptoms, just the desire to use (or drink), so of course if you stop, especially cold turkey, you're going to feel depressed, suicidal, anxious, and physically sick regardless of being on the med or not. Not that those can't be side effects as well (I know first hard they are because I tried it before/to prevent relapsing and had some of that but not as bad as it could have been), but either time they go away as you adjust like most long-term psych meds which, find me a psych med that hasn't caused SI or tiredness in someone or doesn't say "find out how this medication affects you before operating heavy machinery." Beats finding out the "oxycodone" you got had fentanyl and xylazine in it.