Section 23630 Of Article 3. Defenses From California Vehicle Code >> Division 11.5. >> Chapter 4. >> Article 3.

. The fact that any person charged with driving under the influence of any drug or the combined influence of alcoholic beverages and any drug in violation of Section 23152 or 23153 is, or has been entitled to use, the drug under the laws of this state shall not constitute a defense against any violation of the sections.