Adult pacifiers which claim to relieve anxiety and improve sleep have become a trending product in China, sparking concerns from doctors and internet users.
Some online shops claim they sell more than 2,000 such items a month.
They are described as being bigger than the baby version and sell for between 10 and 500 yuan (US$1.4 and US$70), the news outlet The Cover reported.
Many shops say that adult pacifiers offer stress relief and help with sleep.
Online shops claim the adult-sized dummies can help relieve stress and aid sleep. Photo: Handout
Some say the products can also help people quit smoking and assist with proper breathing.