diarrhoea

He said under the right supervision the medicine "can make a massive difference" but the side effects can range from nausea, constipation and diarrhoea, to more sinister things such as pancreatitis and gallstones.

Side effects range from nausea and diarrhoea to rarer risks such as gallstones, pancreatitis and muscle loss.

"On top of her existing symptoms, she suffered from diarrhoea and horrendous nausea... she couldn't even bear to sit upright. It was truly horrendous."

Most of those taken sick experienced diarrhoea, nausea and dizziness after they ate meals that were served on Tuesday, local health agency head Ismono told journalists.

If healthy people take too much, their kidneys can get rid of it in "expensive urine", but there are still risks, like diarrhoea, vomiting and nausea.