Psychedelics are sometimes explored in the context of addiction, but they come with real risks. I cannot verify their effectiveness for treating addiction.
With substances like alcohol, benzodiazepines, or opioids, stopping abruptly is widely reported to be risky. Psychedelics can make bodily signals feel distant or confusing, so withdrawal complications might be missed. I cannot verify what is safe for any individual.
A powerful session can give the impression that the addiction is resolved while daily habits, environment, and coping stay the same. Intense emotions such as shame, guilt, or worthlessness may surface and, without careful integration, can feed old self-medication patterns. Some people also shift into chasing the next intense trip, and media hype can set unrealistic expectations; for a short overview of common risks, see this resource: risks of psychedelics and addiction.
Keep expectations modest and approach this area carefully.