India, Dec. 9 -- A Chinese woman has sparked widespread concern after she began vomiting blood shortly after taking a so-called weight loss injection that she had purchased online.

According to a report by the South China Morning Post, the 28 year old woman, identified only by her surname Chen, is from Suzhou in Jiangsu province in southeastern China. More than a month ago, she came across an advertisement for a weight loss shot shared by a friend on social media. The friend claimed that each injection could guarantee at least 3.5 kilograms of weight loss. Attracted by the promise, Chen paid 900 yuan (US$130) for a treatment package consisting of three injections.

Since she had never used similar products before, Chen decided to inject ...