Will medicines affect the breath alcohol reading in a Lion breathalyser instrument?
Alcohol is a volatile chemical: this means that it evaporates from the blood into the breath. Any medicine taken in tablet form is plainly a solid, which cannot evaporate into the air, so it is not in the breath, so it cannot affect the alcohol reading. Any liquid medicine that contains alcohol will plainly cause some increase in the breath level. However, provided the user complies with the stated dose, then such an elevation will be both very small and quite temporary. Also, the analytical technology used in Lion instruments be unaffected by practically all other liquid ingredients in the medicine. So in general, NO, medicines cannot influence breath alcohol readings as obtained using Lion breathalyser instruments.