coronavirus.A research study at Swansea University is examining the efficacy of Boots Dual Defence - a £5.99 nasal spray containing seaweed - in preventing people becoming ill with Covid and reducing the severity of any symptoms.
The trial involves 480 front line NHS workers, WalesOnline reports.The preparation contains carragelose, a patented-version of iota-carrageenan (a form of seaweed).It has already been found to shorten the duration and severity of cold and flu-like symptoms.The study will also examine if it could also reduce the risk of being infected with the virus which causes coronavirus.Dr Zita Jessop, the clinical trial's principal investigator, said: "After seeing the effects of this pandemic on colleagues caring for patients.