In People v. Turner (Colo.App. 1983) 680 P.2d 1290, 1293, defendant was charged with robbery. His defense was that he had not been warned of the effects of ingesting excessive doses of a prescription drug and that his past experience in taking excessive doses of the drug caused him to believe that he would go to sleep, not that he would become intoxicated. (Ibid.) The Colorado Court of Appeals held his defense of involuntary intoxication was a proper question for the jury to determine "in light of the credibility of the witnesses, common knowledge, and the implicit warning in the prescribed dosage." (Ibid.)