May 31, 2020 Dragon's Blood for the Flu Tags: colds & flu, dragon's blood, flu, influenza, labgardens rescue resin, natural remedy, plants for colds and flu, sangre de grado Dragon's Blood has been shown to be effective against Respiratory Syncytial Virus (RSV) A&B, Parainfluenza Types 1 & 3, Influenza A, Influenza B in clinical tests. Read more...