<prompt> Intolerance to a drug occurs at what dose in an individual ?Subtherapeutic doseTherapeutic doseToxic doseNot related to the dose of drug  <response>: Ans. isbi.e., Therapeutic dose IntoleranceIt is the appearance of characteristic toxic effects of drug in an individual at therapeutic doses.Converse of tolerance and indicates a low threshold of the individual to the action of a drug. 