26 Sep 2013 Blackmores Institute Seaweed extract ramps up protection of seasonal flu vaccine 26 Sep 2013 Share Share on LinkedIn Share on Facebook Share on Twitter Share on Google+ Share on Pinterest News Consumption of a seaweed extract around the time of having a ‘flu jab increases antibody titres against strains of the virus in elderly people, a Japanese study shows. × To continue reading this article, please Log In or Sign Up for access.