Is it possible to have a full blown physical addiction to 2 substances at the same time, or do stronger addictions overwhelm weaker addictions?

For example, if you were addicted to nicotine, and developed a heroin addiction, would you still crave cigarettes?

Yes...

Yes...

Do you know if anything would anything take preference, or would you just crave both just as much...

Might sound kind of dumb, but I'm just curious.

I smoke a cig when I need one, I go buy a bag when I need one. I smoke while I'm using, I use while I smoke.

Each substance is addictive in different ways. They don't compensate for each other. If you're addicted to smack, you've got a smack addiction; if you're addicted to cigarettes, you've got a cigarette addiction.

Addiction is physical/mental dependence on any substance period. Doesn't matter if it's chocolate or heroin (And yes it can be to a lot more than just one substance at once), if your body is telling you it wants it or you think about using it at least once a day, you're probably addicted.

That simple.

Mike.