that is for the quercetin. you can buy it with bromelain to help it absorb
i buy Quercetin Phytosome which supposedly is more absorbable.
I’m using Quercetin and the horse paste and a “Immune Health” supplement with C, D and Zinc (along with some others that make it a “targeted” multivitamin) - had to order more Zinc on line because all the local stores are out - and Zicam is an expensive Zinc source....