Increased Absorption and Retention Dietary Supplement Hypoallergenic CurcuWin - Curcumin with Enhanced Absorption CurcuWin 500 CurcuWin turmeric (Curcuma longa) root extract, concentrated to minimum 20% curcuminoids, has 46-times increased relative absorption of total curcuminoids over standard curcumin and higher serum concentrations after 12 hours.