Pharmacist Andrew Nixon failed to notice the GP’s error and dispensed the drugs at the then Alliance Pharmacy in Strathmartine Road, which is now owned by Boots.

Following a disciplinary hearing earlier this month, the Royal Pharmaceutical Society issued Mr Nixon with an official warning after ruling that his fitness to practise was not currently impaired.

Dr Salahuddin Malik, who wrote the prescription after Mrs Rodger went to Downfield surgery for treatment for back pain, also received an official warning from the General Medical Council in 2007.

Mrs Rodger’s daughter, Rena Brady, who was not informed about Mr Nixon’s disciplinary hearing, said she was appalled that the pharmacist had only received a warning.

“I am absolutely disgusted that the man who filled such a lethal prescription got off with just a warning,” she said.

“It was a bit of a shock to find out that the Royal Pharmaceutical Society had held a hearing, as we weren’t told. I can’t say the result was a huge surprise, as the doctor got off just as lightly. I just wish the pharmaceutical society and the GMC had taken the matter much more seriously.

“It’s not as though these two just made someone ill. We lost our mum because of their carelessness, and there is still a gaping hole in our lives.”

The 43-year-old, who lives in Lochee, said the family continued to struggle with their loss every day.

“My brothers John, Philip, Tony and I are a very close family, and our mum was such a huge part of it,” she said.

“She lived in sheltered housing, but she never classed herself as one of the old folk.”

Mrs Brady and her family won undisclosed damages last year after successfully suing Dr Malik and Mr Nixon.

A spokesperson from the Royal Pharmaceutical Society of Great Britain expressed their sympathy at the family’s loss, but defended the committee’s decision.

“We sympathise with the family and we do understand that they would hope for a different outcome.

“These were the committee’s findings.

“Our role is to protect the public and, based on the substantial steps taken by Mr Nixon since 2005, coupled with his insight, the committee found his fitness to practise is not currently impaired.

“In the context of this case, it was a dispensing error, and we consider a formal warning to be an appropriate response.”