Allergy versus side effects: The Confusion Must Stop Correct answers are shown below 1.Define Side Effects. (Correct) Side effects are the secondary and undesired effects of a drug. 2.Examples of side effects include: (Correct) Drowsiness with the administration of diphenhydramine. 3.An allergen is defined as: (Correct) A substance that incites an allergic reaction. 4.Drug molecules and their metabolites become active allergens when they bind to: (Correct) Proteins 5.Anaphylaxis is: (Correct) The most severe form of an allergic reaction. 6.Allergic reactions after the administration of oral drugs tend to occur: (Correct) At unpredictable times. Test Results7.True hypersensitivity reactions to drugs probably account for: (Correct) 10% of all adverse reactions to drugs. 8.Anaphylactoid reactions tend to be mediated by: The correct answer is: Activation of the complement system 9.The complement system is usually activated in which two pathways? The correct answer is: Classical and alternative pathways. 10.Which of the following drugs is the most commonly involved in true allergic reactions? (Correct) Penicillin