[ceol]

I'm not sure if you're joking, but opiates are grown from opium poppy plants, so that would be a good place to start if you actually wanted an abundance to feed to animals. Tramadol, however, is an opioid, which is a term that encompasses both opiates and synthetic opiate-like drugs -- of which Tramadol falls in the latter.

[gcb4]

that's the point. synthetic opiates are not cheap. and those farmers are feeding herd with it.