Do you have any drug addiction homebrew?

Hey there choombas!

I'm the GM of a game and my players generally RUN AWAY from drugs... The thing is that the fear of addiction and the side effects is greater than the benefits they can bring. I try to get the NPCs to use them so they have examples of what they can do and that can help them in combat and other situations, but they still prefer to be clean. Do you have any homebrews about addiction that are more lenient than those in the core book?

Thanks in advance!