This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Pharmacodynamics, Subject name: Pharmacology
Which of the following is an example of Type E adverse drug reaction? 
Select and explain. 
A. Withdrawal reaction, B. Teratogenesis, C. Augmented response, D. Toxicity
A: Withdrawal reaction
Answer: A: Withdrawal reaction 
Explanation: Adverse Drug Reactions are noxious or unintended effects produced by drugs. These may be classified as Type A: Augmented pharmacologic effects - Dose dependent and predictable e.g. hypoglycemia caused by anti-hyperglycemic drugs like sulfonylureas Type B: Bizarre effects (or idiosyncratic) - Dose independent and unpredictable e.g. allergic reactions caused by penicillins Type C: Chronic effects e.g. peptic ulcer caused by chronic use of NSAIDs Type D: Delayed effects e.g. teratogenicity caused by thalidomide Type E: End-of-treatment effects e.g. withdrawal response to morphine Type F: Failure of therapy