The Central Bank has said it has asked a number of financial services firms to change or withdraw advertisements because of concerns that they are not complying with consumer protection guidelines.
A revised consumer protection code came into effect at the start of this year.
The code covers how firms should advertise financial products and services.
The Central Bank has said that it was concerned that some advertisements were not complying with these new rules.
It said it was now "actively reviewing" the way financial products and services were advertised, adding that it wanted to see "clearer, more balanced" advertising.
The Central Bank has said that it is concerned in general about fairness, clarity, accuracy and the potential to mislead in some advertisements.
It said important information about the product or service being offered was not prominent enough in some cases.
In others, the bank said, information such as the minimum price and maximum saving had not been included in the main body of the advertisement.