Intoxication by drugs is different from intoxication by alcohol. The science is different in that the prosecutor is going to try to convict the client. Therefore, it is imperative that the attorney know all the science, and all the particular expert testimonies about drugs, and to be able to defend a DWI drug case. An attorney might be well versed in the effects of alcohol, and alcohol testing, yet that does not make the attorney an expert in drugs, and their intoxicating effects. Therefore, that is why it is imperative that the person have attorneys who are expert with both alcohol, and drugs in defending these DWI cases.