OTTAWA - Health Canada is warning consumers not to use Jin Bu Huan Anodyne tablets after two reported adverse reactions in this country.

The Canadian importer, Wing Quon Enterprises Ltd., has initiated a recall of the product - unauthorized for use in Canada - as the federal agency says it contains an undeclared ingredient (tetrahydropalmatine).

Health Canada says the amount of the chemical contained in a daily dose of the tablets has been associated with liver injury in adults, and brain and nervous system injury in children and adults.

It's also been associated with adverse reactions such as fever, nausea, vomiting, abdominal pain, and diarrhoea.

The product label also promotes unauthorized use in the treatment of ulcer pain, and abdominal pain after childbirth.

Health Canada wants retailers to pull the product from store shelves, and advises consumers who have taken the tablets to discontinue use immediately and consult a health care professional.