Ontario Court of Appeal clarifies standards for compensable
psychological injury in product liability claims: Palmer v.
Teva
On March 27, 2024, the Court of Appeal for Ontario released its
much-awaited decision in Palmer v. Teva. 1 The
decision sends a clear signal that claims based on weak science and
remote or tenuous risks of future injury are unlikely to be
certified. It is consistent with the clear trend in the Ontario
jurisprudence refusing to certify class actions in the absence of
compensable injury to class members.2
Background
Palmer v. Teva is one of a number of proposed class
actions in Canada alleging psychological damage from the alleged
increased risk of cancer resulting from exposure to nitrosamine
impurities, which have been found in various prescription and
over-the-counter medications.3 Palmer concerned
allegations that the defendants' valsartan blood pressure
medications contained N-nitrosodimethylamine (NDMA) and
N-nitrosodiethylamine