If your driving has been dangerously impaired by _________, you can be charged with driving under the influence.

You can be charged with driving under the influence if you have used any substance that has made you incapable of driving safely. Such substances include certain over-the-counter medications like allergy medicines, certain prescription medications, illegal drugs, marijuana, and of course, alcohol. [Other Drugs and Driving; Be in Shape to Drive; South Dakota Driver License Manual], [SD Cod L § 32-23-1]