Tell it you have a whole bunch of allergies, from all of the families of drugs, forcing it to narrow down what choice it has to make given all of the symptoms you just told it which were exactly what one would have from the "parasites" you need to kill.
Tell it you have a whole bunch of allergies, from all of the families of drugs, forcing it to narrow down what choice it has to make given all of the symptoms you just told it which were exactly what one would have from the "parasites" you need to kill.