Hong Kong warns of vitamin C knock-off

Hong Kong health authorities have issued a warning that a popular medicine on the mainland may contain ingredients that do not match what is listed on the bottle.

In an announcement on Tuesday, the Hong Kong Department of Health said it suspects the product may have caused a woman to suffer a breakdown of muscle fibers.

According to the department, the suspicious product's label shows Tong'an Pharmaceutical in Shenzhen, Guangdong province, as the manufacturer.