Placeholder. A supplement ingredient flagged as a research gap in the US (beta-glucan immune modulators in multivitamin-format products) turned out to be commercially real — just in Australia instead, closing the gap with a specifically named branded ingredient (Wellmune).
What we've found so far: Blackmores' Gut Immune Biotic explicitly uses clinically-trialled Wellmune beta-glucan, resolving a gap flagged during earlier US-market research where no equivalent product could be found.
Open research: Check whether Wellmune (the ingredient itself) is available to US brands and simply unused, or genuinely restricted/licensed differently by region.
