From Health Canada:
Drug stability failure of a few lots of Carbolith 150 mg capsules
Dear Health Care Professional,

Valeant Canada Limited (formerly ICN Canada Limited) is advising consumers about a recall involving lots of Carbolith 150 mg capsules from pharmacies and wholesalers across Canada.

As a precaution, Valeant Canada Limited recommends physicians to re-evaluate patients on Carbolith 150 mg by monitoring serum lithium levels and exercising clinical and laboratory surveillance over possible side effects.