If your defence is that there are pharmaceuticals in meat, then at this point that is such common knowledge that it's not even a defence unless you have proactively recorded the due diligence you did on the source of your food. Picking up a burrito from a Mexican food truck is basically the same as buying OTC medicine in a foreign country and assuming the formulation is the same as your domestic version.
If your defence is that there are pharmaceuticals in meat, then at this point that is such common knowledge that it's not even a defence unless you have proactively recorded the due diligence you did on the source of your food. Picking up a burrito from a Mexican food truck is basically the same as buying OTC medicine in a foreign country and assuming the formulation is the same as your domestic version.