A man who had been taking a Chinese remedy for oral ulcers was diagnosed with severe lead poisoning. The medicine was discovered to contain 46 to 74% lead.
Lead poisoning can cause toxicity to the brain, liver, heart and kidneys.
Consumers are warned against taking medicines not prescribed by a health professional. Products can carry the risk of adulterants, and are also sometimes labelled incorrectly, or in another language.
If you suspect lead poisoning, see your doctor for a blood lead level as soon as possible.