Teachers at a southern Vietnam high school have been recommending a Chinese medicine to help children gain weight, although the medicine's origin has not been cleared.
The teachers at Ngoc To High School in Soc Trang Province said they used the medicine for their children and it was "effective."
According to the teachers, the medicine is sold at all Chinese traditional medicine stores in the province for VND300,000 (US$14) a box with 10 vials.
The label for the medicine is written in Chinese, and there is no Vietnamese wording about the medicine's origin or effects.
Thanh Nha, a teacher at the school, said her colleagues had recommended the medicine and she had bought it, but her family prevented her from giving it to her child.