It is common for government laboratories to run Drug Screens for the following characteristics of drugs: (1) Alkaline Drugs; (2) Weakly Acidic and/or Neutral Drugs; and (3) Benzodiazepines. Therefore, because prescription drugs will naturally be found in a blood sample taking from a person who takes prescription medications, you should expect to be charged with DUI-Drugs, specifically, DUI-Prescription Medications.
The fact that it is not per se illegal to consume prescription drugs, the presence of them is of little value to the prosecution without proof that the individual’s blood levels of the drugs rise to a level indicating impairment. But again, the government has been running out of control as of late, charging any driver who admits to taking any prescription medication(s) with DUI-Drugs.