9 December 2014 Last updated at 16:43 GMT
Mrs Mujuru, once seen as a future possible leader, has denied plotting against the president.
State media and Mr Mugabe's wife, Grace, have conducted a campaign against her for months.
BBC Africa reviews the demise of Mr Mugabe's main opponents - in 90 seconds.
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Patients often have a catheter fitted, either to drain urine stuck in the bladder or to monitor urine output.
But these flexible tubes can harbour nasty bugs and cause infection.
Scientists at University of Southampton have shown in the lab that diluted honey stops some common bacteria from forming sticky, hard-to-remove layers on surfaces such as plastic.
In theory, a honey solution might be useful for flushing urinary catheters to keep them clean while they remain in the bladder.
Many more trials would be needed to check it would be safe to use in humans, however.
Honey has been used for centuries as a natural antiseptic. People have used it to treat burns and wounds and many companies now sell a range of "medical grade" honey products that comply with regulatory standards.
The laboratory work, published in the Journal of Clinical Pathology, looked at two common bacteria that can cause urine and bladder infections - E. coli and Proteus mirabilis.
Even at low dilution - about 3.3% - the honey solution appeared to stop the bacteria from clustering together and creating layers of known biofilm.
Dr Bashir Lwaleed's team used Manuka honey (made by bees that feed on the nectar of the manuka tree) in their study because this dark-coloured honey from Australia and New Zealand is known to have bacterial-fighting properties.
They say other types of honey might work too, but they have not tested this.
Dr Lwaleed said: "Nobody knows exactly how or why honey works as an antibacterial. And we don't know how well honey would be tolerated in the bladder. We are the first to propose this."
Prof Dame Nicky Cullum is an expert in wound care and has looked at the evidence around honey as a treatment.
She said: "This work from Southampton is at a very early stage so we shouldn't get too excited. But it is an interesting avenue that is worth pursuing.
"Obviously, we'd need more studies to check that it wouldn't irritate the bladder or cause any other problems.
"People like things that are natural but they are not always more effective."

The first teenager has been bailed after admitting possessing a machete as disorder broke out at the Intu Bromley centre. Shoppers panicked after rumours of a gunman.
Armed police were called at about 15:45 GMT and found a boy with a head injury. Two knives were recovered.
Both boys have also been charged with common assault and violent disorder.

Michelle Owens, 28, was sentenced at Belfast Crown Court after pleading guilty to the manslaughter of Brendan Owens, 3, in their home at Trinity Terrace, Lisburn, in July 2013.
The child died after being suffocated with a pillow.
The judge said he was satisfied that Owens was very unwell at the time.
He described it as a tragic situation for both her and her son and made the hospital order without time restrictions.
A consultant psychiatrist told the court that the defendant was suffering from paranoid schizophrenia and did not want the child to be taken into care because she believed he could be abused in a home.
The court heard that Owens told her son that "mummy's going to help you in case the bad men get you", before placing the pillow over his face.
The judge said he believed Owens had been a loving mother and that she bitterly regrets the death of her son.
President Robert Mugabe of Zimbabwe has sacked his Vice-President, Joice Mujuru, after accusing her of plotting to kill him.
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