Please Reply I Need Answers

I know heroin makes people gouge, do Subutex tablets? And does methodeone? 2-12mg of subutex my boyfriend was on and he's now on 10mg of methadone... he keeps gouging in the evenings and i dont know if he's using heroin... Please i'm desperate for answers.. can anybody help?????????? i'm on my own with this and he says its the medication...
I think I posted to you in another thread.
Sorry for sounding naive, but what is gouging?
Mickey