You betcha, fuck damn near all of them actually. Even antibiotics are poison. In fact, anything that's
anti-anything (biotic, fungal etc), or
inhibits anything (ssri uptake), any
blockers, modifiers, antagonists, the list goes on they're all fucking poison. At least with opioids you can get a buzz as you disconnect your pain receptors if you take 'em on an empty stomach. I say, quit being a slave to the substance and just stop if it's a problem. I know it's easier said than done, but a week of hell is nothing compared to the rest of your life.
I would also say that mj is the only intoxicant that is non-toxic, unless you count certain psychedelics.
I use real codeine once a day, in its weakest form. In fact if I was in a neighboring country it's available over the counter. I consider the acetaminophen portion of this medication (tylenol #3)
much more of a long-term issue than the opiate portion. I rarely take more than one a day, even when I am really hurting I only up my dose by half a tablet because I know how physical dependance works. Luckily I am in one of the enlightened states, so I can keep my addictive "prescribed poison" usage legally in check with mmj.
FUCK unenlightened state governments!