A trial of a popular cold remedy containing seaweed which could potentially combat coronavirus is under way at a university.
A research study involving 480 frontline NHS workers in the city is examining the efficacy of the £5.99 Boots Dual Defence in preventing Covid illness and reducing the severity of its symptoms.
The spray contains Carragelose, a patented version of iota-carrageenan, a form of seaweed, and has already been proven to shorten the duration and severity of cold and flu-like symptoms.
The Swansea University study will examine whether it could also reduce the risk of being infected with the virus which causes Covid-19, Wales Online reports.