Toxicological Trivia from November 10, 2009: Related with adverse drug reactions (ADRs) type A we can say:
a) They are not predictable from the pharmacological effect;
b) It is often presented as an exaggeration of pharmacological effects that it produces;
c) No dose-effect relationship

Answer b. Read more in monograph in Spanish  by  Marcela Evangelista: Adverse Drug Reactions: A toxicological approach