chippermonk
Bluelighter
I'm a late to this discussion so pardon me if saying things already said. I read (Wikipedia) that phenobarbital is a p450 inducer. CYP2D6 is in the family of p450, I believe. You are trying to figure out if phenobarbital ( and other barbituates) is an inducer of CYP2D6 and therefore a potentiator of codeine?
I would think that it would be kind of common knowledge just because of trial-and-error use by drug users, just like some user figured out that glutethimide worked so well with codeine. Of course, I can easily imagine that using any barbs with codeine could be extremely dangerous and it might have ruined any possible positive effects. I'm not sure if glutethimide is as potent a sedative as barbiturates. I do know that I found phenobarbital to be a very unappealing drug on it's own back long ago when I tried it, but I never liked sedatives much at all, beyond opiates
I would think that it would be kind of common knowledge just because of trial-and-error use by drug users, just like some user figured out that glutethimide worked so well with codeine. Of course, I can easily imagine that using any barbs with codeine could be extremely dangerous and it might have ruined any possible positive effects. I'm not sure if glutethimide is as potent a sedative as barbiturates. I do know that I found phenobarbital to be a very unappealing drug on it's own back long ago when I tried it, but I never liked sedatives much at all, beyond opiates
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