You could be taking prescribed medication entirely legally, show no signs of driving erratically but still face prosecution for driving above the prescribed limit.
|Medicinal’ drugs (risk based approach)||Threshold limit in blood/|
Following charge, defences do apply where it can be shown that the amount of drugs in a person’s system was a result of therapeutic and prescribed use and that driving was not impaired. However, the mere introduction of the offence has resulted in the criminalisation of the largest section of the public than any other before it.
There is no way of knowing for certain when taking any of the above substances how your body will absorb it and whether it could result in you being over the limit.
With so much at stake, you simply cannot afford to take chances when accused of drug driving. The advice of proven experts in the field is essential.