Chinese social media videos claiming that a drink mix can shed four kilos of weight within two days have trended with some slimmers daring to try it.

The videos show influencers demonstrating how to make the concoction, mixing and shaking glycerin enema and unsweetened tea. The mixture is a constipation medication that induces pooping and the influencers claimed achieving an impressive weight-loss result by going to the toilet frequently, South China Morning Post (SCMP) reports, citing Shangyou News.

A woman surnamed Ma shared online her experience of taking the drink and suffering from diarrhea and vomiting 30 minutes later.

“I went to the toilet once an hour. I could not sleep the whole night,” Ma was quoted as saying, according to SCMP.

A major hospital in central Henan province, China said on social media in early July that it had received many emergency patients who had become ill after trying the slimming method. It warned that the drink had twice the effect of a laxative, SCMP reports.

An enema, which is for external use only, can harm digestive organs and expel water instead of fat from the body, Sun Hailan, a nutritionist at Chongqing Women’s and Children’s Hospital, warned, SCMP reports.

Meanwhile, organizers of the Firefly Anime Game Carnival in Guangzhou, China responded to complaints of attendees by expelling several cosplayers for selling an unusual drink at the venue.

The cosplayers were selling “foot juice” that they made by soaking their bare feet in lemon-infused water, The Standard (TS) reports.

Clips showed some people scooping up the water with disposable cups from the large containers where the feet of sitting cosplayers were submerged and drinking it.

Other clips showed people drinking water dripping from the cosplayers’ feet, then holding and licking their feet, according to TS.

As the cosplayers’ stall drew widespread attention at the event, organizers intervened and ordered the cosplayers to leave the venue, TS reports.