There is a common misconception that if a drug came from a doctor, it is legal to use it and continue with your life as normal. That often includes getting behind the wheel of a car to drive to work or other social obligations. In reality, however, many medications doctors prescribe can affect your ability to safely operate a motor vehicle.
Laws in Texas make it illegal to drive while under the influence of alcohol (DUI) or while impaired by illegal street drugs or prescription medication (DWI). Even if you don't believe your ability to drive changes when you take your medication, it's always best to err on the side of caution. If you have taken a new prescription and you are unsure about the side effects, use a ride share service, call for a taxi or have someone you trust drive you after taking it.