Ms Sword said that unlike the previous provider, no medical checks had been made.
“Because I had done it, I thought it was going to be OK,” she said.
Soon after the injection, she collapsed and suffered seizures.
Her blood sugar had reduced to about 0.2 millimoles per litre, with normal levels being between four and seven, sending her into a diabetic coma.
“I was rushed into hospital and a team raced in, got round me and tried everything they could at that point to counteract what was in my body,” she said.
Weight loss drugs have become popular due to social media and celebrities using them to shed excess pounds quickly.