It's important to note that "toxicomane" is a very general term and can refer to addiction to any substance, whether it's drugs, alcohol, or even something like gambling.
Here are some other words you could use depending on the context:
* "dépendant": This translates to "dependent" and is a more general term for someone who is addicted to something.
* "alcoolique": This specifically refers to an alcoholic.
* "drogomane": This specifically refers to a drug addict.
If you are talking about someone who is addicted to something specific, it's best to use the specific term for that substance. For example, you would say "un toxicomane à la nicotine" to refer to a nicotine addict.