The Competition and Consumer Protection Commission (CCPC) has warned businesses against unfair practices due to the COVID-19 crisis.
The CCPC is responsible for enforcing competition and consumer protection legislation.
The group said there is currently a high demand for health products - such as hand sanitiser and surgical masks.
As a result, products are increasingly being sold by traders who do not ordinarily operate in the health and hygiene sector.
They are also being sold through different channels, including the internet and through social media platforms.
It added: "Whilst the vast majority of businesses act in good faith and do not seek to take unfair advantage, in these challenging times there is a heightened risk that a small minority of traders may engage in commercial practices, which are damaging to consumer welfare particularly vulnerable consumers."
The CCPC said it has been actively monitoring compliance with consumer protection law requirements, including commercial practices which are misleading to consumers.
This includes, for example, include claiming that a product is able to cure an illness when it cannot.
The CCPC is monitoring websites and where issues are identified, and will take appropriate action to protect consumers.