The winter vomiting bug has broken out at a Ninewells Hospital ward.
The Short Stay Medicine Unit has been closed to new admissions following several cases of vomiting and diarrhoea which is through to be caused by norovirus.
The precautionary measure is to prevent the spread of the virus and infection control measures have been put in place.
A spokeswoman for NHS Tayside said: “Winter vomiting is extremely common at this time of year in the wider community.
“To help us minimise the spread of these bugs, we ask people who may be feeling unwell or experiencing vomiting and diarrhoea not to visit their friends and family members who are in hospital.
“We would urge them to stay away until at least 48 hours after they are free of all symptoms.”